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cholesterol

(Encyclopedia) CE5 cholesterolcholesterolkəlĕsˈtərōlˌ [key], fatty lipid found in the body tissues and blood plasma of vertebrates; it is only sparingly soluble in water, but much more soluble in…

Rous, Francis Peyton

(Encyclopedia) Rous, Francis Peyton, 1879–1970, American pathologist, b. Baltimore, educated at Johns Hopkins (B.A., 1900; M.D., 1905). He taught (1906–8) pathology at the Univ. of Michigan and in…

agranulocytosis

(Encyclopedia) agranulocytosisagranulocytosisəgrănˌyəlōsītōˈsis [key], disease in which the production of granulated white blood cells by the bone marrow is impaired. Although the disease may occur…

ehrlichiosis

(Encyclopedia) ehrlichiosisehrlichiosisârlĭkēōˈsĭs [key], any of several diseases caused by rickettsia of the genera Ehrlichia and Anaplasma. Ehrlichiosis is transmitted by ticks. Both human forms…

venom

(Encyclopedia) venom or zootoxin, any of a variety of poisonous substances produced by animals. In poisonous snakes, venom is secreted in two poison glands, one on each side of the upper jaw, and…

snakebite

(Encyclopedia) snakebite, wound inflicted by the teeth of a snake. The bite of a nonvenomous snake is rarely serious. Venomous snakes have fangs, hollow teeth through which poison is injected into a…

leech

(Encyclopedia) leech, predacious or parasitic annelid worm of the class Hirudinea, characterized by a cylindrical or slightly flattened body with suckers at either end for attaching to prey. The…

streptococcus

(Encyclopedia) streptococcusstreptococcusstrĕpˌtəkŏkˈəs [key], any of a group of gram-positive bacteria, genus Streptococcus, some of which cause disease. Streptococci are spherical and divide by…

platelet

(Encyclopedia) platelet: see blood clotting.

fibrin

(Encyclopedia) fibrin: see blood clotting.