Tritium
Hydrogen-3, an isotope of hydrogen. Tritium is a long-lived weak emitter of radiation and can be easily incorporated in large molecules such as DNA, and is therefore much used for autoradiography in the laboratory.
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- Trocar
A sharply pointed shaft, usually with a three-sided point. A trocar may be used within a cannula, a hollow tube, designed to be inserted into a vein, artery, bone marrow or body cavity. The word trocar is derived from the French “trois” (three) + “carre” (side).
- Trochanter
The greater trochanter – A powerful protrusion located at the proximal (near) and lateral (outside) part of the shaft of the femur. The greater trochanter is also called the major trochanter, the outer trochanter, and the lateral process of the femur. The lesser trochanter – A pyramidal prominence that projects from the proximal (near) and […]
- Troche
A small medicated lozenge designed to dissolve. For example, to soothe the throat as a cough drop. Strictly speaking, a troche should be circular since the word derives from the Greek “trokhiskos” meaning “a little wheel.” Pronounced trOh-key
- Trochlear nerve
The nerve that controls the superior oblique muscle of the eye, one of the muscles that move the eye (extraocular muscles). Paralysis of the trochlear nerve results in rotation of the eyeball upward and outward (and, therefore, in double vision). The trochlear nerve is the fourth cranial nerve, and it is the only cranial nerve […]
- Tropical diabetes
Diabetes mellitus associated with chronic malnutrition and, sometimes, chronic pancreatitis. Whether tropical diabetes exists as a distinct entity is under debate. While malnutrition may influence the expression of diabetes, the evidence that diabetes can be directly caused by protein deficiency is not convincing. Also called malnutrition-related diabetes.