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Transaminase, serum glutamic pyruvic (SGPT)
An enzyme that is normally present in liver and heart cells, and is released into blood when the liver or heart is damaged. Blood SGPT levels are thus elevated with liver damage ...
SYN: aminotransferases.
The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter; in certain cases the reaction may be between an ...
Permeable to sound waves. [ trans- + L. audio, pres. p. audiens, to hear]
SYN: diathermanous. [ trans- + L. caleo, to be warm]
The phenomenon whereby the adenovirus capsid of the SV40 adenovirus “hybrid” is replaced by the capsid of another type of adenovirus; extended to include a similar ...
SYN: carbamoyltransferases.
The transfer of a carbamoyl moiety from one molecule to another; e.g., the reaction catalyzed by ornithine transcarbamoylase in the urea cycle.
SYN: carboxyltransferases.
transcendental meditation
A form of meditation practiced over 2500 years ago in Eastern cultures and which was recently made popular in the West by Maharishi Mahesh Yogi as a means to help increase ...
Substances included in “R binder,” the name given a family of cobalamin-binding proteins; deficiencies have been associated with low serum cobalamin levels, and can lead to ...
Across or through the condyles; denoting the line of bone incision in Carden amputation.
1. Across or through the cortex of the brain, ovary, kidney, or other organ. 2. From one part of the cerebral cortex to another; denoting the various association tracts.
An α2-globulin in blood that binds cortisol and corticosterone; the principal corticosteroid-binding protein in the plasma. SYN: corticosteroid-binding globulin, ...
A polymerase associated with the process of transcription; may be RNA-dependent or DNA-dependent. [L. transcribo, pp. transcriptum, to copy, + -ase] - reverse t. rNA-dependent ...
Making an RNA copy from a sequence of DNA (a gene). Transcription is the first step in gene expression. * * * Transfer of genetic code information from one kind of nucleic acid ...
SYN: percutaneous.
A mechanism for transcellular transport in which a cell encloses extracellular material in an invagination of the cell membrane to form a vesicle (endocytosis), then moves the ...
SYN: percutaneous.
To effect transduction.
An instrument that converts electrical energy into mechanical energy. A transducer can also act as a transmitter and receiver of ultrasound information. * * * A device designed ...
A protein that binds guanine nucleotides ( I.E., a G protein), found in retinal rods and cones, that plays a major role in signal transduction; in vertebrate rod cells it acts ...
A cell that has acquired a new character by means of transduction; may be complete, with integration of the transferred genetic fragment into its genome, or abortive, in which ...
1. Transfer of genetic material (and its phenotypic expression) from one cell to another by viral infection. 2. A form of genetic recombination in bacteria. 3. Conversion of ...
1. A cross-section. 2. Cutting across. SYN: transsection. [ trans- + L. seco, pp. sectus, to cut]
Across or through the ethmoid bone.
A method of gene transfer utilizing infection of a cell with nucleic acid (as from a retrovirus) resulting in subsequent viral replication in the transfected cell. [ trans- + ...
1. Process of removal or transferral. 2. A condition in which learning in one situation influences learning in another situation; a carry-over of learning that may be ...
Transfer RNA (tRNA)
A class of RNA that has triplet nucleotide sequence complementary to the triplet nucleotide coding sequences of messenger RNA (mRNA). The role of tRNAs is to bond with amino ...
See entries under ribonucleic acid.
Enzymes (EC class 2) transferring: one-carbon groups (2.1, including methyltransferases, 2.1.1; formyltransferases, 2.1.2; carboxyl- and carbamoyltransferases, 2.1.3; and ...
1. Conveyance of an object from one place to another. 2. Shifting of symptoms from one side of the body to the other, as seen in certain cases of conversion hysteria. 3. ...
A plasma protein that transports iron through the blood to the liver, spleen and bone marrow. The blood transferrin level is tested for diverse reasons: to determine the cause of ...
To pierce with a sharp instrument. [L. trans-figo, pp. -fixus, to pierce through, fr. figo, to fasten]
A maneuver in amputation in which the knife is passed from side to side through the soft parts, close to the bone, and the muscles are then divided from within outward. [L. ...
Fourier t. SYN: Fourier analysis.
A bacterium that has received genetic material (and its phenotypic expression) from another bacterium by means of transformation.
1. SYN: metamorphosis. 2. A change of one tissue into another, as cartilage into bone. 3. In metals, a change in phase and physical properties in the solid state caused by heat ...
To perform transfusion.
Transfer of blood or blood component from one individual (donor) to another individual (receptor). [L. transfundo, pp. -fusus, to pour from one vessel to another] - drip t. t. ...
Transfusion medicine
Blood transfusion and blood conservation are the complementary activities that constitute the clinical arena of transfusion medicine. Blood transfusion is the transfer of blood ...
A newly introduced gene.
Reproduction involving introduction of foreign species DNA into an ovum.
Having genetic material (DNA) from another species. This term can be applied to an organism that has genes from another organism. It is understood that the foreign genes are in ...
Vertical crossing of the glottis, as in the spread of carcinoma from the supraglottic to the infraglottic area.
SYN: glucosyltransferase.
A group of enzymes that catalyze the calcium-dependent acyl transfer reaction in which the amide moiety of peptide-bound glutaminyl residues serve as acyl donor; a specific t. ...
The transfer of a glycosidically bound sugar to another molecule.
SYN: glycosyltransferase.
By way of a hiatus; e.g., t. esophagectomy, performed partially through the esophageal hiatus.
1. Short-lived; passing; not permanent; said of a disease or an attack. 2. A short-lived cardiac sound having little duration (less than 0.12 s) as distinct from a murmur; e.g., ...
Transient insomnia
Insomnia that only lasts a single night up to a few weeks. If episodes of transient insomnia occur from time to time, the insomnia is considered intermittent. Transient and ...
Transient ischemic attack (TIA)
A neurological event with the signs and symptoms of a stroke, but which go away within a short period of time. Also called a mini-stroke, a TIA is due to a temporary lack of ...
Extending from one ilium or iliac crest or spine to the other.
Jumping across; passing over; pertaining to those cortical association fibers in the brain that pass from one convolution to another nonadjacent one. [L. transilio, to leap ...
The passing of a strong beam of light through a part of the body for medical inspection. A method of examination by the passage of light through tissues or a body cavity. A ...
Across the insula or island of Reil.
Extending from one ischium to the other.
Across any isthmus; specifically, across the isthmus of the fornicate gyrus, denoting the gyrus transitivus.
1. Passage from one condition or one part to another. 2. In polynucleic acid, replacement of a purine base by another purine base or a pyrimidine base by a different ...
Relating to or marked by a transition; transitory.
Transjugular intrahepatic portosystemic shunt
A shunt that allows blood from the portal circulation (that supplies the liver) to flow into the systemic (general) circulation. Transjugular intrahepatic portosystemic shunt ...
Transjugular, intrahepatic, portosystemic shunt (TIPS)
A shunt (tube) placed between the portal vein which carries blood from the intestines to the liver and the hepatic vein which carries blood from the liver back to the heart. It ...
A transferase bringing about the reversible interconversion of sedoheptulose 7-phosphate and d-glyceraldehyde 3-phosphate to produce d-ribose 5-phosphate and d-xylulose ...
A reaction involving the transfer of a ketole group (HOCH2CO–) from one compound to another.
To go from RNA to protein, translation is needed. Translation is the process by which the genetic code carried by messenger RNA (mRNA) directs the production of proteins from ...
1. Transposition of two segments between nonhomologous chromosomes as a result of abnormal breakage and refusion of reciprocal segments. 2. Transport of a metabolite across a ...
Translocation 11 childhood leukemia
A new type of childhood leukemia in which a piece of chromosome 11 has been translocated (broken off and attached itself to another chromosome). Children with this type of ...
Translocation, reciprocal
A type of chromosome rearrangement involving the exchange of chromosome segments between two chromosomes that do not belong to the same pair of chromosomes. A specific reciprocal ...
Translocation, Robertsonian
A relatively very common and medically significant type of chromosome rearrangement that is formed by fusion of the whole long arms of two acrocentric chromosomes (chromosomes ...
Partially transparent; permitting light to pass through diffusely. [L. translucens, fr. trans- + luceo, to shine through]
Through or across a membrane.
SYN: methyltransferase.
Transfer of a methyl group from one compound to another; e.g., l-homocysteine is converted to l-methionine by the transfer to the latter of a methyl group. See methionine ...
Movement from one site to another; may entail the crossing of some usually limiting barrier, as in the passage of blood cells through the walls of the vessels (diapedesis). [L. ...
Capable of being transmitted (carried across) from one person to another, as a t. disease, an infectious or contagious disease.
1. SYN: transfer. 2. The conveyance of disease from one person to another. 3. The passage of a nerve impulse across an anatomic cleft, as in autonomic or central nervous system ...
Transmission, perinatal
Transmission of a disease-causing agent (a pathogen) from mother to baby during the perinatal period, the period immediately before and after birth. The perinatal period is ...
Transmission, vertical
Transmission of a disease-causing agent (a pathogen) vertically from mother directly to baby during the perinatal period, the period immediately before and after birth. The ...
Through any wall, as of the body or of a cyst or any hollow structure. [ trans- + L. murus, wall]
A change; transformation. SYN: conversion (1). [L. transmuto, pp. -atus, to change, transmute]
Transmyocardial laser revascularization
A procedure by which a physician uses a laser to make holes in the heart to relieve the pain of severe angina. Transmyocardial laser revascularization has been done from both ...
Across the eye.
Transmission of a sound arising in one organ through another. [ trans- + L. sonans, sounding]
In ultrasound, describes a region of a relatively unattenuating medium. A distinction should be made between a t. region and an acoustic echo. [ trans- + sonic]
Through or across a parietal region, area, or structure.
An enzyme catalyzing a transpeptidation reaction; many proteolytic enzymes ( e.g., trypsin, papain) act as transpeptidases in the course of proteolysis, forming an acylated ...
A reaction involving the transfer of one or more amino acid s from one peptide chain to another, as by transpeptidase action, or of a peptide chain itself, as in bacterial cell ...
Through the peritoneum; e.g., denoting a nephrectomy performed by abdominal section.
SYN: phosphotransferases.
See phosphotransferases, phosphorylases, kinase.
A reaction involving the transfer of a phosphoric group from one compound to another, often with the involvement of ATP, as by the action of a phosphotransferase or kinase.
Capable of transpiring or being transpired.
Passage of watery vapor through the skin or any membrane. SEE ALSO: insensible perspiration. [ trans- + L. spiro, pp. -atus, to breathe] - pulmonary t. the passage of water ...
To exhale vapor from the skin or respiratory mucous membrane. [ trans- + L. spiro, to breathe]
Crossing the placenta.
The grafting of a tissue from one place to another, just as in botany a bud from one plant might be grafted onto the stem of another. The transplanting of tissue can be from one ...
Transplant, hand and forearm
Transplantation of the hand and the forearm from one person (a deceased donor) to another (the recipient). In the first hand transplant, performed in Ecuador in 1964, the donor ...
Transplant, heart
A surgical procedure in which a diseased heart is replaced with a healthy heart from a deceased person. The world’s first heart transplant was done on December 3, 1967 by ...
Transplant, lung
The first lung transplant was done by the American surgeon James Hardy (1918-) in 1964.
Across the sole of the foot; denoting certain muscular fibers or ligamentous structures.
Implanting in one part a tissue or organ taken from another part or from another individual. SEE ALSO: graft. [L. transplanto, pp. -atus, to transplant] - bone marrow t. grafting ...
Transplantation genetics
The field of biology and medicine relating to the genes that govern the acceptance or rejection of a transplant. The most important genes deciding the fate of a transplanted ...
Transplantation, cross-species
Transplantation from one species to a foreign one. Known medically as xenotransplanation. The rationale for this type of transplantation has been the short supply of human organs. ...
Transplantation, peripheral blood stem cell
A new technique in which stem cells are obtained from a patient's blood and used in bone marrow transplantation. Stem cells are small, round cells with a squat nucleus and scant ...
Through the pleura or across the pleural cavity; on the other side of the pleura.
The movement or transference of biochemical substances in biologic systems. [L. transporto, to carry over, fr. trans- + porto, to carry] - active t. the passage of ions or ...
Transport defect
Within the body, many molecules are able to pass across the membranes that surround cells. These molecules can accomplish this feat due to specific transport systems. These ...
Transport disease, cystine
Commonly known as cystinuria, this is an inherited (genetic) disorder of the transport of an amino acid (a building block of protein) called cystine. The result is an excess of ...
An enzyme that is required for transposition of DNA segments. [L. trans-pono, pp. trans-positum, to set across, transfer, + -ase]
To transfer one tissue or organ to the place of another and vice versa. [L. trans-pono, pp. -positus, to place across, transfer]
1. Removal from one place to another; metathesis. 2. The condition of being in the wrong place or on the wrong side of the body, as in t. of the viscera, in which the viscera ...
Transposition, genetics
The ability of genes to change position on chromosomes, a process in which a transposable element is removed from one site and inserted into a second site in the DNA. Genetic ...
A short mobile DNA sequence that can replicate and of which copies can be inserted at random sites within chromosomes. A transposon has almost identical sequences at each end and ...
SYN: transection.
Across or through a segment.
Across or through a septum; on the other side of a septum.
A person who desires or has achieved transsexualism. See transsexualism. * * * 1. A person with the external genitalia and secondary sexual characteristics of one sex, but ...
Consistently strong desire to change one’s anatomical gender. Some transsexuals were misassigned gender at birth (for example, being anatomically male but raised as female), ...
Through or across the sphenoid bone.
Descriptive term applied to the enzymes catalyzing, among others, the following reactions involving sulfur-containing compounds: 1) cystathionine → cysteine + α-ketobutyrate ...
The exchange of sulfur, or sulfur-containing moiety, between two different compounds.
Indicating transmission of a nerve impulse across a synapse.
Passing across or through either the tentorial notch or tentorium cerebelli.
Passing across the thalamus.
SYN: diathermy. [ trans- + G. therme, heat]
Passing through the thoracic cavity.
A surgical procedure carried out through an incision into the chest wall. [ trans- + thorax + G. tome, incision]
SYN: prealbumin (1).
A fluid that passes through a membrane which filters out much of the protein and cellular elements to yield a watery solution. A transudate is due to increased pressure in the ...
1. Passage of a fluid or solute through a membrane by a hydrostatic or osmotic pressure gradient. See transudate. 2. SYN: transudate.
In general, to ooze or to pass a liquid gradually through a membrane, more specifically, through a normal membrane, as a result of imbalanced hydrostatic and osmotic forces. ...
SYN: transsulfurase.
Anastomosis of the transected end of one ureter into the intact contralateral ureter, by direct or elliptical end-to-side technique. See ureteroureterostomy. SYN: ...
Through the urethra.
Transurethral resection
: Surgery performed with a special instrument inserted through the urethra. Also called TUR.
SYN: scillaren A.
Across or through the vagina.
Transvaginal ultrasound
A technique in which sound waves are sent out by an ultrasound probe that has been inserted in the vagina. The waves go through the vaginal wall and bounce off the ovaries, and a ...
An animal that transmits a toxic substance that it does not produce, but that may be accumulated from animal ( dinoflagellate) or plant ( algae) sources; e.g., filter-feeding ...
Transverse, denotes especially a fascia. SYN: transverse, transverse. [L.]
A horizontal plane passing through the standing body parallel to the ground. For a more complete listing of terms used in medicine for spatial orientation, please see the entry ...
Transverse fracture
A fracture in which the break is across the bone, at a right angle to the long axis of the bone. A fracture is a break in the bone or cartilage. It usually is a result of trauma ...
Resection of the transverse process of a vertebra. [transverse + G. ektome, excision]
1. Substitution in DNA and RNA of a pyrimidine for a purine, or vice versa, by mutation. 2. In dentistry, the eruption of a tooth in a position normally occupied by another; ...
SYN: costotransverse.
SYN: t. (muscles), under muscle.
Denoting the transverse fibers of the sphincter urethrae muscle, arising from the arch of the pubes.
SYN: transverse. [L. fr. trans, across, + verto, pp. versus, to turn]
Dressing in the clothing of the opposite sex. Transvestism is distinct from both transsexualism and homosexuality. In psychiatry, it can be considered a paraphilia. Also known ...
A person who dresses in the clothing of the opposite sex, i.e., a person who cross-dresses. * * * A person who practices transvestism.
SYN: transvestism.
Alexios, Greek ophthalmologist, 1867–1960. See T. dots, under dot, Horner-T. dots, under dot.
tranylcypromine sulfate
A monoamine oxidase inhibitor; an antidepressant used in the treatment of severe mental depression. Interacts with many foods and drugs to produce hypertensive crisis.
Abbreviation for twin reversed arterial perfusion.
Relating to any trapezium.
SYN: trapezoid (1).
Relating to the trapezium and the metacarpus.
1. A four-sided geometrical figure having no two sides parallel. 2. SYN: t. bone. [G. trapezion, a table or counter, a t., dim. of trapeza, a table, fr. tra- (= tetra-), four, ...
SYN: t. (muscle).
1. Resembling a trapezium. SYN: trapeziform. 2. A geometrical figure resembling a trapezium except that two of its opposite sides are parallel. 3. SYN: t. (bone). 4. SYN: t. ...
An antagonist and selective synthesis inhibitor of thromboxane A2; used to prevent cerebral vasospasm.
Julius, Russian pharmacist, 1815–1908. See T. formula, T.-Häser formula.
Ludwig, German physician and pathologist, 1818–1876. See T. bruit, T. corpuscle, T. dyspnea, T. plugs, under plug, T. semilunar space, T. sign, T. double tone, T.- Hering ...
Carl, German internist, *1885. See Staub-T. effect.
See traumato-.
Any injury, whether physically or emotionally inflicted. "Trauma" has both a medical and a psychiatric definition. Medically, "trauma" refers to a serious or critical bodily ...
Trauma center
A specialized facility in a hospital that is designed to provide diagnostic and treatment services for trauma patients with physical injuries. Traumatology is the branch of ...
Plural of trauma.
Relating to or caused by trauma. [G. traumatikos]
Traumatic alopecia
Hair loss caused by injury to the scalp. Traumatic alopecia is usually caused by grooming methods that attempt to straighten the natural kinkiness of hair in order to make the ...
SYN: trauma.
To cause or inflict trauma. [G. traumatizo, to wound]
traumato-, traumat-, traum-
Wound, injury. [G. trauma]
The branch of surgery that deals with trauma patients and their injuries. Patients who have suffered significant physical trauma, as from a car accident, may be cared for in a ...
Surgical repair of an accidental wound. [traumato- + G. neis, a spinning]
Any pathologic condition resulting from violence or wounds. [traumato- + G. pathos, suffering]
Passage of air in and out through a wound of the chest wall. [traumato- + G. pnoe, breath]
Obsolete synonym of traumatic fever. [traumato- + G. pyr, fire, fever]
Infection of a wound; septicemia following a wound. [traumato- + G. sepsis, putrefaction]
Treatment of trauma or the result of injury.
Moritz F., German otologist, 1832–1902. See T. triangular space.
Travel medicine
1. A branch of medicine that specializes in diseases and conditions that are acquired during travel. Travelers to different countries should be aware of the potential for ...
Travelers’ diarrhea
Diarrhea that results from infections acquired while traveling to another country. Among the causes of travelers’ diarrhea are enterotoxigenic E. coli and a variety of
In computed tomography, one complete linear movement of the gantry across the object being scanned, as occurred in the original translate and rotate CT machines. [M.E., fr. ...
A flat receptacle with raised edges. - acrylic resin t. a plastic impression t. used in dentistry; usually fashioned for the individual patient from an autopolymerizing acrylic ...
trazodone hydrochloride
An antidepressant structurally unrelated to other antidepressants.
Treacher Collins
Edward, English ophthalmologist, 1862–1919. See T. syndrome.
A medicinal compound once in wide use as an antidote to poisons. Treacle was a kind of salve. It was reputed to be a remedy against venomous bites in particular and against ...
A machine with a moving strip on which one walks without moving forward. A treadmill was originally a wide wheel turned by the weight of people climbing on steps around its ...
Treadmill test
A test (sometimes called the exercise treadmill test or exercise test) in which a continuous electrocardiogram (ECG or EKG) recording of the heart is made as the patient ...
Treadmill, exercise
Exercise on a treadmill, a machine with a moving strip on which one walks without moving forward. A treadmill was originally a wide wheel turned by the weight of people ...
To manage a disease by medicinal, surgical, or other measures; to care for a patient medically or surgically. [Fr. traiter, fr. L. tracto, to drag, handle, perform]
Medical or surgical management of a patient. SEE ALSO: therapy, therapeutics. [Fr. traitement (see treat)] - active t. a therapeutic substance or course intended to ameliorate ...
Treatment, palliative
To palliate a disease is to treat it partially and insofar as possible, but not cure it completely. Palliation cloaks a disease. Also sometimes called symptomatic treatment. To ...
Treatment, symptomatic
Therapy that eases the symptoms without addressing the basic cause of the disease. For example, symptomatic treatment of advanced lung cancer that has spread (metastasized) ...
A saccharine substance containing trehalose and resembling manna, excreted by a parasitic beetle, Larinus maculatus. [Fr., fr. Turk. tigala, fr. Pers. tighal]
A glycosidase secreted in the duodenum that hydrolyzes α-glycosidic 1,1 bonds; an absence or deficiency of this enzyme will lead to deficient digestion of trehalose (autosomal ...
A nonreducing disaccharide, (α-d-glucosido)-α-d-glucoside, contained in trehala; also found in fungi, such as Amanita muscaria; elevated in individuals with a trehalase ...
Wenzel, Bohemian pathologist, 1819–1872. See T. arch, T. fascia, T. fossa, T. hernia, T. ligament, T. muscle.
Ulysse, French surgeon, 1828–1890. See T. stools, under stool, Leser-T. sign.
1. SYN: foramen. 2. SYN: vulva. [G. t., a hole]
The extracellular part of the cell surface adhesion molecule ICAM-1 involved in rhinovirus attachments to mucosal cells.
A class in the phylum Platyhelminthes (the flatworms), consisting of flukes with a leaf-shaped body and two muscular suckers, and an acelomate parenchyma-filled body cavity. ...
trematode, trematoid
1. Common name for a fluke of the class Trematoda. 2. Relating to a fluke of the class Trematoda.
An intoxication of cattle, caused by eating white snakeroot, Eupatorium urticaefolium, or the rayless goldenrod; the active agent is a higher alcohol, tremetol, which ...
The shaking or quaking of a tremor.
tremelloid, tremellose
Jelly-like. [L. tremulus, trembling]
The graphic representation of a tremor taken by means of the tremograph or kymograph. SYN: tremorgram.
An apparatus for making a graphic record of a tremor. [L. tremor, a shaking, + G. grapho, to write]
Inactivated or destroyed by shaking. [L. tremor, a shaking, + labilis, perishable]
Morbid fear of trembling. [L. tremor, trembling, + G. phobos, fear]
A tremor is an abnormal repetitive shaking movement of the body. Tremors have many causes and can be inherited, related to illnesses * * * 1. Repetitive, often regular, ...
SYN: tremogram.
A chemical which in the laboratory produces a tremor resembling parkinsonian tremor and is used to produce experimental parkinsonism.
Not subject to alteration or destruction by being shaken. [L. tremor, a shaking, + stabilis, stable]
An instrument for giving vibratory massage.
Characterized by tremor.
Paul, French physician, *1875. See Klippel-T.- Weber syndrome.
Trench fever
A disease borne by body lice that was first recognized in the trenches of World War I, when it is estimated to have affected more than a million people in Russia and on the fronts ...
Trench mouth
A progressive painful infection of the mouth and throat with ulceration, swelling and sloughing off of dead tissue from the mouth and throat due to the spread of infection from ...
Friedrich, German surgeon, 1844–1924. See T. operation, T. position, reverse T. position, T. sign, T. symptom, T. test, T. gait.
SYN: trephination. - corneal t., t. of cornea SYN: keratoplasty.
Removal of a circular piece (“button”) of cranium by a trephine. SYN: trepanation.
1. SYN: perforator. 2. To remove a disk of bone or other tissue by means of a t.. [contrived fr. L. tres fines, three ends]
SYN: trophocyte. [G. trepho, to nourish, + kytos, cell]
trepidatio cordis
SYN: palpitation.
Anxious fear. [L. trepidatio, fr. trepido, to tremble, to be agitated]
A genus of anaerobic bacteria (order Spirochaetales) consisting of cells, 3–8 μm in length, with acute, regular, or irregular spirals and no obvious protoplasmic structure. A ...
Treponema pallidum
The cause of syphilis, this is a microscopic bacterial organism called a spirochete, a worm-like spiral-shaped organism that wiggles vigorously when viewed under a microscope. ...
SYN: treponemiasis.
A vernacular term used to refer to any member of the genus Treponema.
Infection caused by Treponema. SYN: treponematosis.
Destructive to any species of Treponema, but usually with reference to T. pallidum, the microorganisms responsible for syphillis. SYN: antitreponemal. [Treponema + L. caedo, to ...
A phenomenon in cardiac muscle first observed by H.P. Bowditch; if a number of stimuli of the same intensity are sent into the muscle after a quiescent period, the first few ...
Frederick J., English physician, 1862–1926. See T. sign.
SYN: perforation. [G. t., a boring]
A keratolytic agent. See retinoic acid.
Sir Frederick, English surgeon, 1853–1923. See T. fold. Norman, U.S. surgeon, 1894–1964. See Stewart-T. syndrome.
David, 20th century British orthopedic surgeon. See T. disease.
Abbreviation for thyrotropin-releasing factor.
Abbreviation for thyrotropin-releasing hormone.
Three. Cf.:tris-. [L. and G.]
Absence of three limbs. [ tri- + G. a- priv. + melos, limb]
triacetic acid
Formed by condensation of acetyl and malonyl CoA's in the course of fatty acid synthesis.
Used as a solvent of basic dyes, as a fixative in perfumery, and as a topical antifungal agent. SYN: glyceryl triacetate, triacetylglycerol.
SYN: triacetin.
SYN: troleandomycin.
Glycerol esterified at each of its three hydroxyl groups by a fatty ( aliphatic) acid; e.g., tristearoylglycerol. SYN: triglyceride. - t. lipase the fat-splitting enzyme in ...
1. A collection of three things having something in common. 2. The transverse tubule and the terminal cisternae on each side of it in skeletal muscle fibers. 3. SYN: portal t.. ...
The process of sorting people based on their need for immediate medical treatment as compared to their chance of benefiting from such care. Triage is done in emergency rooms, ...
A test or experiment, usually conducted under specific conditions. - clinical t. a controlled experiment involving a defined set of human subjects, having a clinical event as an ...
trial and error
The apparently random, haphazard, hit-or-miss exploratory activity which often precedes the acquisition of new information or adjustments; it may be overt, as in a rat running in ...
Trial, clinical
A trial done to evaluate the effectiveness and safety of medications or medical devices by monitoring their effects on large groups of people. Clinical research trials may be ...
A glucocorticoid with actions and uses similar to those of prednisolone. - t. acetonide a potent glucocorticoid for topical treatment of dermatoses. - t. diacetate an ...
A potassium sparing diuretic agent, often used in combination with hydrochlorthiazide.
In anatomy and surgery, a three-sided area with arbitrary or natural boundaries. SEE ALSO: trigonum, region. [L. triangulum, fr. tri-, three, + angulus, angle] - anal t. [TA] ...
See triangular muscle. [L. triangular]
See triangle. [L.]
A genus of insects ( subfamily Triatominae, family Reduviidae) that includes important vectors of Trypanosoma cruzi, such as T. dimidiata, T. infestans, and T. maculata.
A subfamily of insects (family Reduviidae, suborder Heteroptera) that are vertebrate bloodsuckers and include such important disease vector species as Panstrongylus, Rhodnius, ...
A short-acting benzodiazepine derivative used as a sedative and hypnotic.
SYN: 8-azaguanine.
Having three titratable hydrogen atoms; denoting an acid with a basicity of 3.
Having three bases.

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