Category: T

In DNA or mRNA, the sequence of three nucleotides that is the code for a particular amino acid. The triplet sequence controls the amino acid sequence during protein synthesis.  

The sum of the clearances from each organ or tissue participating in the elimination of a substance from the body.  

Chromatography involving the differential adsorption of substances as they pass through a thin layer or sheet of cellulose or some other inert compound.  

A familial condition marked by degeneration of the choroid, especially in the region about the macula lutea. It occurs in aged persons.  

Group of cephalosporin antibiotics capable of killing aerobic gram-negative rods. These agents are commonly used for treatment of pneumonia and meningitis. Some agents, namely ceftazidime and cefoperazone, have excellent activity against Pseudomonas aeruginosa. Examples of third-generation cephalosporins are cefsulodin, cefotaxime, ceftizoxime, ceftriaxone, cefoperazone, moxalactam, and ceftazidime.  

A center in the hypothalamus that regulates heat production and heat loss, especially the latter, so that a normal body temperature is maintained. It is influenced by nerve impulses from cutaneous receptors and by the temperature of the blood flowing through it.  

An abnormally shaped blood cell, sometimes found on blood smears of patients with bone marrow fibrosis, iron deficiency, or thalassemias.  

One of the neuroepithelial cells within a taste bud that are receptors for the sense of taste. Each possesses on the free surface a short gustatory hair that projects through the inner taste pore.  

A phagocyte that has ingested the unaltered nuclei of cells. These nuclei can be observed unchanged within the phagocytic cell.  

An intravenous catheter inserted into the subclavian or internal jugular vein and then advanced into the right atrium or superior vena cava. The proximal end is tunneled subcutaneously from the insertion site and brought out through the skin at an exit site below the nipple line. Commonly used tunneled catheters include the Hickman and Broviac…