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Слова на букву insp-line (2629)

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Le Bel
Joseph Achille, French chemist, 1847–1930. See L.-van't Hoff rule.
Le Chatelier
Henri, French physical chemist, 1850–1936. See L. law, L. principle.
Le Fort
Léon C., French surgeon and gynecologist, 1829–1893. See L. I fracture, L. II fracture, L. III fracture, L. sound, L. amputation.
LE, L.E.
Abbreviation for left eye; lupus erythematosus.
leaching
1. Removal of the soluble constituents of a substance by running water through it. 2. Solubilization of metals, typically from poor ores, using lithotrophic bacteria. [A.S. ...
lead
A metallic element, atomic no. 82, atomic wt. 207.2. SYN: plumbum. - l. acetate has been used as an astringent in diarrhea, and in aqueous solution as a wet dressing in ...
Lead poisoning
An environmental hazard capable of causing brain damage. In the US lead poisoning is formally defined as having at least 10 micrograms of lead per deciliter of blood. (The ...
lead1
An electrocardiographic cable with connections within the electronics of the machine designated for an electrode placed at a particular point on the body surface. - ABC leads the ...
leaflet
1. A layer of phospholipid; thus, a bilayer has two leaflets. 2. A thin flattened object or structure.
League of Red Cross Societies
The international federation of national Red Cross and similar societies.
learned helplessness
A laboratory model of depression involving both classical (respondent) and instrumental ( operant) conditioning techniques; application of unavoidable shock is followed by ...
learning
Generic term for the relatively permanent change in behavior that occurs as a result of practice. SEE ALSO: conditioning, forgetting, memory. - incidental l. l. without a direct ...
least squares
A principle of estimation invented by Gauss in which the estimates of a set of parameters in a statistical model are the quantities that minimize the sum of squared differences ...
Leber
Theodor, German ophthalmologist, 1840–1917. See L. idiopathic stellate neuroretinitis, L. hereditary optic atrophy, L. plexus, amaurosis congenita of L..
lecithal
Having a yolk or pertaining to the yolk of any egg; used especially as a suffix. [G. lekithos, egg yolk]
lecithin
Traditional term for 1,2-diacyl-sn-glycero-3-phosphocholines or 3-sn-phosphatidylcholines, phospholipids that on hydrolysis yield two fatty acid molecules and a molecule each of ...
lecithin-cholesterol acyltransferase
An enzyme that reversibly transfers an acyl residue from a lecithin to cholesterol, forming a 1-acylglycerophosphocholine (a lysolecithin) and a cholesteryl ester; a deficiency ...
lecithinase
SYN: phospholipase. - l. A SYN: phospholipase A2. - l. B SYN: lysophospholipase. - l. C SYN: phospholipase C. - l. D SYN: phospholipase D.
lecithoblast
One of the cells proliferating to form the yolk-sac endoderm. [G. lekithos, egg yolk, + blastos, germ]
lecithoprotein
A conjugated protein, with lecithin as the prosthetic group.
Leclef
See Denys-L. phenomenon.
Leclercia
A genus in the family Enterobacteriaceae that resembles the genus Escherichia, but is separable by metabolic and genetic classification. Isolated from the feces of humans and ...
lectin
Any of a group of glycoproteins of primarily plant (usually seed) origin that binds to glycoproteins on the surface of cells causing agglutination, precipitation, or other ...
Ledermann
Sully, French psychiatrist. See L. formula.
ledge
In anatomy, a structure resembling a l.. SEE ALSO: shelf, lamina. - dental l. a band of ectodermal cells growing from the epithelium of the embryonic jaws into the underlying ...
Lee
Robert, English physician, 1793–1877. See L. ganglion. Roger I., U.S. physician, 1881–1967. See L.-White method.
leech
1. A bloodsucking aquatic annelid worm (genus Hirudo, class Hirudinea) sometimes used in medicine for local withdrawal of blood.For various l. species, see Hirudo. 2. To ...
leeching
The former practice of applying leeches to the body to draw blood for therapeutic purposes.
Leede
Carl S., U.S. physician, *1882. See Rumpel-L. sign, Rumpel-L. test, L.- Rumpel phenomenon.
LEEP
Abbreviation for loop electrocautery excision procedure; loop electrosurgical excision procedure.
Leeuwenhoek
Anton van, Dutch microscopist, 1632–1723. See L. canals, under canal.
Lefèvre
Paul, 20th century French dermatologist. See Papillon-L. syndrome.
Left heart
The heart is composed functionally of two hearts — the right heart and the left heart. The left heart consists of the left atrium which receives oxygenated blood from the lung ...
Left heart hypoplasia syndrome
A form of congenital heart disease in which the whole left half of the heart (including the aorta, aortic valve, left ventricle and mitral valve) is underdeveloped ...
left-footed
SYN: sinistropedal.
left-handed
Denoting the habitual or more skillful use of the left hand for writing and for most manual operations. SYN: sinistromanual.
left-sidedness
The normal left-sided location of certain unpaired organs, such as the spleen and most of the stomach. - bilateral left-sidedness a syndrome in which normally unpaired organs ...
Leg
In popular usage, the leg extends from the top of the thigh down to the foot. However, in medical terminology, the leg refers to the portion of the lower extremity from the knee ...
Leg, ankle and foot bones
There are 62 lower extremity bones. They consist of 10 hip and leg, 14 ankle and 38 foot bones. The 10 hip and leg bones are the innominate or hip bone (fusion of the ilium, ...
Leg, lower
The lower leg is the bottom segment of the leg: the part below the knee. The lower leg contains two long bones. The larger of these two bones is the tibia, the smaller one the ...
Leg, upper
The upper leg is the superior (top) segment of the leg: the part above the knee. As compared to the lower leg which boasts two bones (the tibia and the fibula), the upper leg ...
Legal
Emmo, German physician, 1859–1922. See L. test.
Legal blindness
The definition varies from country to country. In the United States, the definition of legal blindness is: {{}}Visual acuity of 20/200 or worse in the better eye with corrective ...
Legal medicine
The branch of medicine that deals with the application of medical knowledge to legal problems and legal proceedings. Legal medicine is also called forensic medicine. A physician ...
Legendre
Gaston J., French physician, *1887. See L. sign.
Legg
Arthur T., U.S. surgeon, 1874–1939. See L.-Calvé- Perthes disease.
Legg-Calvé-Perthes disease
A hip disorder in children due to interruption of the blood supply to the head of the femur (the ball in the ball-and-socket hip joint), causing it to deteriorate. The disease is ...
Legionella
The bacterium that causes Legionnaires' disease. This disease is due specifically to the bacterium Legionella pneumophila found in plumbing, shower heads and water-storage tanks. ...
legionellosis
SYN: Legionnaires disease.
Legionnaire disease
A disease due to the bacteria Legionella pneumophila found in plumbing, shower heads and water-storage tanks. Outbreaks of Legionella pneumonia have been attributed to ...
legumin
SYN: avenin.
leguminivorous
Feeding on beans, peas, and other legumes.
Lehmann
J.O. Orla, Swedish physician, *1927. See Börjeson-Forssman-L. syndrome.
Leigh
Denis, British psychiatrist, *1915. See L. disease.
Leiner
Karl, Austrian pediatrician, 1871–1930. See L. disease.
leio-
Smooth. [G. leios]
leiomyofibroma
SYN: fibroleiomyoma.
Leiomyoma
A benign tumor of smooth muscle, the type of muscle that is found in the heart and uterus. A leiomyoma of the uterus is commonly called a fibroid. Uterine fibroids are the ...
leiomyomatosis
The state of having multiple leiomyomas throughout the body. - l. peritonealis disseminata a benign condition characterized by multiple small nodules on abdominal and pelvic ...
leiomyomectomy
Surgical resection of a leiomyoma, usually of the uterus.
Leiomyosarcoma
A malignant tumor of smooth muscle origin. Smooth muscle is the major structural component of most hollow internal organs and the walls of blood vessels. Can occur almost ...
leiotrichous
Having straight hair. [ leio- + G. thrix, hair]
leipo-
See lipo-.
Leipzig yellow
SYN: chrome yellow.
Leishman
Sir William B., Scottish surgeon, 1865–1926. See Leishmania, L. chrome cells, under cell, L. stain, L.- Donovan body.
Leishmania
A group of parasites causing a disease called leishmaniasis. For a fuller definition and more information, see Leishmania infection. * * * A genus of digenetic, asexual, ...
Leishmania infection
A parasitic disease, also called leishmaniasis, spread by the bite of sand flies infected with a protozoa (Leishmania). There are several forms of leishmaniasis, the most common ...
leishmaniae
Plural of leishmania.
Leishmaniasis
Diseases due to the parasite called Leishmania involving the organs (kala-azar), skin plus mucous membranes (espundia), or skin alone (usually named for the place plus boil, ...
Leishmaniasis, visceral
A chronic and potentially fatal parasitic disease of the vicera (the internal organs, particularly the liver, spleen, bone marrow and lymph nodes) due to infection by the protozoa ...
leishmaniosis
SYN: leishmaniasis.
leishmanoid
Resembling leishmaniasis. - dermal l. SYN: post- kala azar dermal l.. - post- kala azar dermal l. a chronic, progressive, granulomatous, nonulcerating hypopigmented nodular ...
Leiter
Russell G., U.S. psychologist, *1901. See L. International Performance Scale.
Lejeune
Jerôme J.L.M., French cytogeneticist, 1926–1994. See L. syndrome.
Lembert
Antoine, French surgeon, 1802–1851. See L. suture, Czerny-L. suture.
lemic
Relating to plague or any epidemic disease. [G. loimos, plague]
Leminorella
A genus in the family Enterobacteriaceae containing two species, L. grimontii and L. richardii, that have been isolated from clinical material, primarily from fecal samples; its ...
Lemli
Luc, 20th century U.S. pediatrician. See Smith-L.- Opitz syndrome.
lemmoblast
In an embryo, a cell of neural crest origin capable of forming a cell of the neurilemma sheath. [G. lemma, husk, + blastos, germ]
lemmocyte
One of the cells of the neurolemma. [G. lemma, husk, + kytos, cell]
lemniscus
A bundle of nerve fibers ascending from sensory relay nuclei to the thalamus. SYN: fillet (1). [L. from G. lemniskos, ribbon or fillet] - acoustic l. SYN: lateral l.. - ...
lemon
The fruit of Citrus limon (family Rutaceae); a source of citric and ascorbic acid; the freshly expressed juice of the ripe fruit is used as a refrigerant diuretic in fever, in ...
lemon yellow
SYN: chrome yellow.
Lendrum
A.C., 20th century Scottish pathologist. See L. phloxine- tartrazine stain, Fraser-L. stain for fibrin.
Lenègre
Jean, 20th century French cardiologist. See L. disease, L. syndrome.
length
Linear distance between two points. - arch l. the amount of space required for the permanent teeth as measured from the mesial aspect of the first molar on one side to the ...
Lenhossék
Michael (Mihály) von, Hungarian anatomist, 1863–1937. See L. processes, under process.
lenitive
1. Soothing; relieving discomfort or pain. 2. Rarely used term for a demulcent. [L. lenio, pp. lenitus, to soften, fr. lenis, mild]
Lennert
Karl, *1921. See L. lymphoma, L. classification.
Lennox
William G., U.S. neurologist, 1884–1960. See L. syndrome, L.- Gastaut syndrome.
Lennox syndrome
Also known as the Lennox-Gastaut syndrome, a severe form of epilepsy that usually begins in early childhood and is characterized by frequent seizures of multiple types, mental ...
Lennox-Gastaut syndrome
A severe form of epilepsy that usually begins in early childhood and is characterized by frequent seizures of multiple types, mental impairment, and a particular brain wave ...
Lenoir
Camille A.H., French anatomist, *1867. See L. facet.
Lens
The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through ...
lens clock
See under lens.
Lens, intraocular
The clouded (cataractous) lens is best removed in its entirety by surgery and replaced with an intraocular lens (IOL) made of plastic, an operation that takes about an hour and ...
Lens, objective
In a microscope, the objective lens is the lens nearest to the object being examined whereas the lens closest to the eye is termed the ocular (the eyepiece). The light ...
Lens, ocular
In a microscope, the lens closest to the eye is termed the ocular (the eyepiece) whereas the objective (also called the objective lens) is the lens nearest to the object being ...
lensectomy
Removal of the lens of the eye by an infusion-aspiration cutter; often done by puncture incision through the pars plana in the course of vitrectomy. [lens + G. ektome, excision] ...
lensometer
An instrument to measure the power and cylindrical axis of a spectacle lens. SYN: focimeter, vertometer. [lens + G. metron, measure]
lensopathy
The process by which tear proteins are deposited on a contact lens. [lens + G. pathos, suffering]
lenticonus
Conical projection of the anterior or posterior surface of the lens of the eye, occurring as a developmental anomaly. [lens + L. conus, cone]
lenticula
SYN: lentiform nucleus. [L. dim. of lens]
lenticular
1. Relating to or resembling a lens of any kind. 2. Of the shape of a lentil. [L. lenticula, a lentil]
lenticulo-optic
Relating to the lentiform nucleus and the optic tract; specifically refers to branches of the middle cerebral artery considered to supply these structures.
lenticulopapular
Indicating an eruption with dome-shaped or lens-shaped papules.
lenticulostriate
Relating to the lenticular nucleus and the caudate nucleus; specifically refers to branches of the middle cerebral artery supplying these gray masses.
lenticulothalamic
Pertaining to the lentiform ( lenticular) nucleus and the thalamus.
lenticulus
Seldom-used term for an intraocular lens prosthesis placed in the anterior or posterior chamber of the eye, or attached to the iris after cataract extraction. SYN: ...
lentiform
Lens-shaped.
lentigines
Plural of lentigo. [L.]
lentiginosis
Presence of lentigines in very large numbers or in a distinctive configuration. - centrofacial l. [MIM*151000 & MIM*151001] uncommon autosomal dominant syndrome of small ...
lentiglobus
Rare congenital anomaly with a spheroid elevation on the posterior surface of the lens of the eye. [lens + L. globus, sphere]
lentigo
A benign, acquired brown macule resembling a freckle except that the border is usually regular and microscopic elongation of rete ridges is present, with increased melanocytes ...
Lentivirinae
Term formerly used to describe a subfamily of nononcogenic viruses (family Retroviridae) that includes the slow viruses of sheep (visna virus and maedi virus) and human T-cell ...
lentivirus
A genus in the family Retroviridae containing 5 serogroups that reflect the host with which they are associated. Among the primate lentiviruses are human immunodeficiency ...
lentogenic
Denoting the virulence of a virus capable of inducing lethal infection in embryonic hosts after a long incubation period and an inapparent infection in immature and adult ...
lentula, lentulo
A motorized, flexible, spiral wire instrument used in dentistry to apply paste filling material into the root canal(s) of a tooth. [L. lentus, pliant, flexible]
Leonardo da Vinci
Architect, engineer, inventor, painter and the father of anatomic art. Leonardo da Vinci first became interested when he was asked by a Veronese anatomist named Marc Antonia Della ...
leontiasis
The ridges and furrows on the forehead and cheeks of patients with advanced lepromatous leprosy, giving a leonine appearance. SYN: leonine facies. [G. leon (leont-), lion] - l. ...
LEOPARD
Acronym for lentigines (multiple), electrocardiographic abnormalities, ocular hypertelorism, pulmonary stenosis, abnormalities of genitalia, retardation of growth, and deafness ...
leopard's bane
SYN: arnica.
Leopold
Christian Gerhard, German physician, 1846–1911. See L. maneuvers, under maneuver.
Lepehne
Georg, German physician, *1887. See L.- Pickworth stain.
leper
A person who has leprosy. [G. lepra]
lepidic
Relating to scales or a scaly covering layer. [G. lepis (lepid-), scale, rind]
Lepidoptera
An order of insects composed of the moths and butterflies, characterized by wings covered with delicate scales. [G. lepis, scale, + pteron, wing]
Leporipoxvirus
The genus of viruses (family Poxviridae) that comprises the fibroma and myxoma viruses of rabbits; unlike the orthopoxviruses, they are ether-sensitive. [L. leporis, gen. of ...
lepothrix
SYN: trichomycosis axillaris. [G. lepos, rind, husk, + thrix, hair]
leprechaunism
A congenital form of dwarfism characterized by extreme growth retardation, endocrine disorders, and emaciation, with elfin facies and large, low-set ears; autosomal recessive ...
leprid
Early cutaneous lesion of leprosy. [G. lepra, leprosy, + -id (1)]
leproma
A fairly well-circumscribed discrete focus of granulomatous inflammation, caused by Mycobacterium leprae, which consists chiefly of an accumulation of large mononuclear ...
lepromatous
Pertaining to, or characterized by, the features of a leproma.
lepromin
An extract of tissue infected with Mycobacterium leprae used in skin tests to classify the stage of leprosy. SEE ALSO: l. reaction, test.
leprosarium
A hospital especially designed for the care of those suffering from leprosy, especially those who need expert care.
leprosery
A leper home or colony.
leprostatic
1. Inhibiting to the growth of Mycobacterium leprae. 2. An agent having this action.
Leprosy
: A chronic granulomatous infection caused by a bacillus (bacterium) that affects various areas of the body, particularly the skin and nerves. (Granulomas are inflammatory nodules ...
leprotic
SYN: leprous.
leprous
Relating to or suffering from leprosy. SYN: leprotic.
leptandra
Dried rhizome and roots of Veronicastrum virginicum (family Serophulariaceae). Indigenous to North America. Formerly used as a cathartic. SYN: black root, Culver root.
Leptin
A hormone involved in the regulation of body fat. Leptin was originally thought to be a signal to lose weight but it may instead be a way for the brain to know that there is fat ...
lepto-
Light, thin, frail. [G. leptos, slender, delicate, weak]
leptocephalous
Having an abnormally tall, narrow cranium. [ lepto- + G. kephale, head]
leptocephaly
A malformation characterized by an abnormally tall, narrow cranium. [ lepto- + G. kephale, head]
leptochromatic
Having a very fine chromatin network.
leptocyte
A target or Mexican hat cell, i.e., an unusually thin or flattened red blood cell in which there is a central rounded area of pigmented material, a middle clear zone that contains ...
leptocytosis
The presence of leptocytes in the circulating blood, as in thalassemia, some instances of jaundice (even in the absence of anemia), occasional examples of hepatic disease (in the ...
leptodactylous
Having slender fingers. [ lepto- + G. daktylos, finger]
leptomeningeal
Pertaining to the leptomeninges.
leptomeninges, leptomeninx
SYN: leptomeninx. [ lepto- + G. meninx, pl. meninges, membrane]
leptomeningitis
Inflammation of leptomeninges. SEE ALSO: arachnoiditis. SYN: pia-arachnitis. - basilar l. inflammation of the arachnoid at the base of the brain; often found in chronic ...
leptomere
A very minute particle of living matter; Asclepiades believed the body was composed of an aggregation of vast numbers of leptomeres. [ lepto- + G. meros, part]
leptomonad
1. Common name for a member of the genus Leptomonas. 2. See promastigote.
Leptomonas
A genus of asexual, monogenetic, parasitic flagellates (family Trypanosomatidae) commonly found in the hindgut of insects. [ lepto- + G. monas, unit]
leptonema
SYN: leptotene. [ lepto- + G. nema, thread]
leptophonia
SYN: hypophonia. [ lepto- + G. phone, sound, voice]
leptophonic
Weak-voiced.
leptopodia
The condition of having slender feet. [ lepto- + G. pous, foot]
leptoprosopia
Narrowness of the face. [ lepto- + G. prosopon, face]
leptoprosopic
Having a thin, narrow face. Cf.:leptosomatic.
leptorrhine
Having a thin nose. Applied to a skull with a nasal index below 47 ( Frankfort agreement) or 48 (Broca). [ lepto- + G. rhis, nose]
leptoscope
An apparatus for measuring cell membranes.
leptosomatic, leptosomic
Having a slender, light, or thin body. [ lepto- + G. soma, body]
Leptospira
A genus of motile aerobic bacteria (order Spirochaetales) containing thin, tightly coiled organisms 6–20 μm in length. They possess an axial filament, and one or both ends ...
leptospire
Common name for any organism belonging to the genus Leptospira.
leptospirosis
Infection with Leptospira interrogans. - anicteric l. infection with one of the species of the Leptospira group, usually mild, with limited liver and kidney involvement, as ...
leptospiruria
Presence of species of the genus Leptospira in the urine, as a result of leptospirosis in the renal tubules.
leptotene
Early stage of prophase in meiosis in which the chromosomes contract and become visible as long filaments well separated from each other. SYN: leptonema. [ lepto- + G. tainia, ...
leptothricosis
Obsolete term for any disease caused by the now invalid genus Leptothrix.
Leptothrix
A now invalid genus of sheathed organisms closely related to the genus Sphaerotilus found in fresh water.
Leptotrichia
A genus of anaerobic, nonmotile bacteria containing Gram-negative, straight or slightly curved rods, 5–15 μm in length, with one or both ends rounded, often pointed. Granules ...
Leptotrombidium
An important genus of trombiculid mites, formerly considered a subgenus of the genus Trombicula, which includes all of the vectors of scrub typhus (tsutsugamushi disease). ...
lergotrile
A derivative of ergot which exerts agonistic properties on dopamine receptors; similar to bromocriptine and lisuride.
Leri
André, French orthopedic surgeon, 1875–1930. See L. pleonosteosis, L. sign, L.- Weill disease, L.- Weill syndrome.
Leriche
René, French surgeon, 1879–1955. See L. operation, L. syndrome.
Lermoyez
Marcel, French otolaryngologist, 1858–1929. See L. syndrome.
Lerner
I.M., U.S. population geneticist, 1910–1967. See L. homeostasis.
Leroy
Edgar August, French physician, *1883. See Fiessinger-L.- Reiter syndrome.
LES
Acronym for lower esophageal sphincter; Lambert- Eaton syndrome.
Lesbian
Female homosexual. The name "lesbian" comes from the Greek island of Lesbos in the Aegian Sea where in antiquity the women were said to be homosexual. The poet Sappho ...
Lesbian suicide risk
High rates of suicide have consistently been reported among homosexuals, particularly among adolescents and young adults. A 1989 report concluded that " gay youth are 2 to 3 ...
Lesbianism
Female homosexuality. Also called sapphism (after the lesbian poet Sappho). * * * Homosexuality between women. SYN: sapphism. [G. lesbios, relating to the island of Lesbos] ...
Lesch
Michael, U.S. pediatrician, *1939. See L.-Nyhan syndrome.
Leser
Edmund, German surgeon, 1828–1916. See L.- Trélat sign.
Lesion
: Pronounced "lee-sion" with the emphasis on the "lee," a lesion can be almost any abnormality involving any tissue or organ due to any disease or any injury. There are, not ...
Lesser
Ladislaus Leo, German surgeon born in Poland, 1846–1925. See L. triangle.
Lesshaft
Pjotr F., Russian physician, 1836–1909. See L. triangle.
LET
Abbreviation for linear energy transfer.
Let down reflex
An involuntary reflex during breastfeeding which causes the milk to flow freely.
lethal
Pertaining to or causing death; denoting especially the causal agent. [L. letalis, fr. letum, death] - clinical l. a disorder that culminates in premature death. - genetic l. a ...
Lethal gene, zygotic
A gene that is lethal (fatal) for the zygote, the cell formed by the union of a sperm (male sex cell) and an ovum (female sex cell). The zygote would normally develop into an ...
lethality
The quality or state of being lethal.
lethargy
Relatively mild impairment of consciousness resulting in reduced alertness and awareness; this condition has many causes but is ultimately due to generalized brain dysfunction. ...
LETS
Acronym for large, external transformation-sensitive fibronectin. See fibronectins.
Letterer
Erich, German pathologist, *1895. See L.- Siwe disease.
Leu
Symbol for leucine; leucyl.
LEU M1
The epitope for a monoclonal antibody generated to the human histiocytic cell line that localizes to neutrophils, adherent monocytes, and a subgroup of activated T cells.
leuc-, leuco-
White; white blood cell. See leuko-, leuk-. [G. leukos, white]
leucin
SYN: leukin.
leucine
2-Amino-4-methylvaleric acid; the l-isomer is one of the amino acid s found in proteins; a nutritionally essential amino acid. - l. aminopeptidase aminopeptidase (cytosol). - l. ...
leucinosis
A condition in which there is an abnormally large proportion of leucine in the tissues and body fluids.
leucinuria
The excretion of leucine in the urine.
leuco patent blue
A sulfonated triphenylmethane dye reduced and decolorized with zinc and acetic acid to produce a stable solution; used to demonstrate hemoglobin peroxidase. SYN: patent blue V. ...
leucoharmine
SYN: harmine.
leucoline
SYN: quinoline (1).
leucomethylene blue
The reduced and colorless form of methylene blue. SYN: methylene white.
Leuconostoc
A genus of microaerophilic to facultatively anaerobic bacteria (family Lactobacillaceae) containing Gram-positive, spherical cells which may, under certain conditions, lengthen ...
leucovorin
SYN: folinic acid. - l. calcium the calcium salt of l. (folinic acid); used to counteract toxic effects of folic acid antagonists, for the treatment of megaloblastic anemias, ...
Leudet
Théodor E., French physician, 1825–1887. See L. tinnitus.
leuenkephalin
See enkephalins.
leuk-
See leuko-.
leukanemia
Obsolete term for erythroleukemia. [leukemia + anemia]
leukapheresis
A procedure, analogous to plasmapheresis, in which leukocytes are removed from the withdrawn blood and the remainder of the blood is retransfused into the donor. [leuko- + G. ...
leukemia
Progressive proliferation of abnormal leukocytes found in hemopoietic tissues, other organs, and usually in the blood in increased numbers. L. is classified by the dominant cell ...
Leukemia, accelerated phase of
Refers to chronic myelogenous leukemia (CML) that is progressing. The number of immature, abnormal white blood cells in the bone marrow and blood is higher than in the chronic ...
Leukemia, acute myelogenous
Abbreviated AML. Also called acute myeloid leukemia or acute nonlymphocytic leukemia (ANLL). A quickly progressive malignant disease in which there are too many immature ...
Leukemia, acute myeloid
A quickly progressive malignant disease in which there are too many immature blood-forming cells in the blood and bone marrow, the cells being specifically those destined to give ...
Leukemia, acute nonlymphocytic
Abbreviated ANLL. More commonly called acute myeloid leukemia (AML). A quickly progressive malignant disease in which there are too many immature blood-forming cells in the ...
Leukemia, blastic phase of
A stage in which 30 percent or more of the cells in the bone marrow or blood
Leukemia, chronic phase of
A stage in which there are few blast cells in the blood or bone marrow, and
Leukemia, lymphocytic
A form of leukemia that has a sudden onset, lymphocytic leukemia starts in the bone marrow but often spreads to the lymphatic and nervous system. With aggressive treatment, ...
Leukemia, myelogenous
A condition in which the bone marrow makes too many white blood cells. Early symptoms include fatigue and night sweats. Treatment may be by radiation, chemotherapy, biological ...
Leukemia, refractory
Leukemia in which the high level of white blood cells is not decreasing in response to
Leukemia, smoldering
A condition in which the bone marrow does not function normally. It does not produce enough blood cells. This condition may progress and become acute leukemia. Smoldering leukemia ...
leukemic
Pertaining to, or having the characteristics of, any form of leukemia.
leukemid
Any nonspecific type of cutaneous lesion that is frequently associated with leukemia, but is not a localized accumulation of leukemic cells; e.g., petechiae, vesicles, wheals, ...
leukemogen
Any substance or entity ( e.g., benzene, ionizing radiation) considered to be a causal factor in the occurrence of leukemia.
leukemogenesis
The causation (or induction), development, and progression of a leukemic disease. [leukemia + G. genesis, production]
leukemogenic
Pertaining to the causation, induction, and development of leukemia; manifesting the ability to cause leukemia.
leukemoid
Resembling leukemia in various signs and symptoms, especially with reference to changes in the circulating blood. SEE ALSO: l. reaction. [leukemia + G. eidos, resemblance]
Leukemoid reaction
A benign condition in which the high number of white blood cells found in a blood test resembles the numbers seen in leukemia. For example, infectious mononucleosis can return ...
leukin
A thermostable bactericidal substance extracted from leukocytes. SYN: leucin. [leukocyte + -in]
Leuko- (prefix)
Prefix meaning white. Leuko- comes from the Greek "leukos" meaning white. As in leukocyte, a white cell (in the blood). Leuko- and leuco- are the same prefix, just different ...
leuko-, leuk-
White; white blood cells. For some words beginning thus, see leuc- and leuco-. [G. leukos, white]
leukoagglutinin
An antibody that agglutinates white blood cells.
leukobilin
SYN: white bile. [leuko- + L. bilis, bile]
leukoblast
An immature granular leukocyte. SYN: proleukocyte. [leuko- + G. blastos, germ]
leukoblastosis
A general term for the abnormal proliferation of leukocytes, especially that occurring in myelocytic and lymphocytic leukemia.
leukochloroma
Obsolete term for myelocytomatosis. [leuko- + G. chloros, green, + -oma, tumor]
leukocidin
A heat-labile substance that is elaborated by many strains of Staphylococcus aureus, Streptococcus pyogenes, and pneumococci and manifests a destructive action on leukocytes, ...
leukocoria, leukokoria
Reflection from a white mass within the eye giving the appearance of a white pupil. SYN: leukokoria, white pupillary reflex. [leuko- white, + G. kore, pupil]
leukocytactic
SYN: leukocytotactic.
leukocytal
SYN: leukocytic.
leukocytaxia, leukocytaxis
SYN: leukocytotaxia.
leukocyte
A type of cell formed in the myelopoietic, lymphoid, and reticular portions of the reticuloendothelial system in various parts of the body, and normally present in those sites ...
Leukocyte, granular
A type of white blood cell filled with microscopic granules (tiny sacs) containing enzymes that digest microorganisms. Granular leukocytes — they are better known as ...
Leukocytes
: Cells that help the body fight infections and other diseases. Also called white blood cells (WBCs).
leukocythemia
Obsolete term for leukemia. [leukocyte + G. haima, blood]
leukocytic
Pertaining to or characterized by leukocytes. SYN: leukocytal.
leukocytoblast
A nonspecific term for any immature cell from which a leukocyte develops, including lymphoblast, myeloblast, and the like. [leukocyte + G. blastos, germ]
leukocytoclasis
Karyorrhexis of leukocytes. [leuko- + G. kytos, cell, + klasia, a breaking]
leukocytogenesis
The formation and development of leukocytes. [leukocyte + G. genesis, production]
leukocytoid
Resembling a leukocyte. [leukocyte + G. eidos, resemblance]
leukocytolysin
Any substance (including lytic antibody) that causes dissolution of leukocytes. SYN: leukolysin.
leukocytolysis
Dissolution or lysis of leukocytes. SYN: leukolysis. [leukocyte + G. lysis, dissolution]
leukocytolytic
Pertaining to, causing, or manifesting leukocytolysis. SYN: leukolytic.
leukocytoma
Obsolete term for a fairly well circumscribed, nodular, dense accumulation of leukocytes. [leukocyte + G. -oma, tumor]
leukocytometer
A standardized glass slide that is suitably ruled for counting the leukocytes in a measured volume of accurately diluted blood (or other specimens). [leukocyte + G. metron, ...
leukocytopenia
SYN: leukopenia.
leukocytoplania
Movement of leukocytes from the lumens of blood vessel s, through serous membranes, or in the tissues. [leukocyte + G. plane, a wandering]
leukocytopoiesis
SYN: leukopoiesis. [leukocyte + G. poiesis, a making]
leukocytosis
An abnormally large number of leukocytes, as observed in acute infections, inflammation, hemorrhage, and other conditions. A white blood cell count of 10,000 or more per mm3 ...
leukocytotactic
Pertaining to, characterized by, or causing leukocytotaxia. SYN: leukocytactic, leukotactic.
leukocytotaxia
1. The active ameboid movement of leukocytes, especially the neutrophilic granulocytes, either toward (positive l.) or away from (negative l.) certain microorganisms as well as ...

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