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Castellani, Sir Aldo

(Encyclopedia)Castellani, Sir Aldo älˈdō käsˌtəläˈnē [key], 1877–1971, British-Italian bacteriologist, b. Florence, Italy. He demonstrated the cause and mode of transmission of sleeping sickness (with Si...

Health and Human Services, United States Department of

(Encyclopedia)Health and Human Services, United States Department of, federal executive department charged with administering government health programs. Successor to the Department of Health, Education, and Welfar...

quarantine

(Encyclopedia)quarantine kwŏrˈəntēn [key], isolation of persons, animals, places, and effects that carry or are suspected of harboring communicable disease. The term originally referred to the 40 days of offsho...

conservation of natural resources

(Encyclopedia)conservation of natural resources, the wise use of the earth's resources by humanity. The term conservation came into use in the late 19th cent. and referred to the management, mainly for economic rea...

peanut

(Encyclopedia)peanut, name for a low, annual leguminous plant (Arachis hypogaea) of the family Leguminosae (pulse family) and for its edible seeds. Native to South America and cultivated there for millenia, it is s...

aphid

(Encyclopedia)aphid or plant louse, tiny, usually green, soft-bodied, pear-shaped insect injurious to vegetation. It is also called greenfly and blight. Aphids are mostly under 1⁄4 in. (6 mm) long. Some are wingl...

Prusiner, Stanley Ben

(Encyclopedia)Prusiner, Stanley Ben, 1942–, American neurologist, b. Des Moines, Iowa, M.D. Univ. of Pennsylvania School of Medicine, 1968. Prusiner has been a professor at the Univ. of California, San Francisco ...

veterinary medicine

(Encyclopedia)veterinary medicine, diagnosis and treatment of diseases of animals. An early interest in animal diseases is found in ancient Greek writings on medicine. Veterinary medicine began to achieve the statu...

Sternberg, George Miller

(Encyclopedia)Sternberg, George Miller stûrnˈbərg [key], 1838–1915, American bacteriologist and surgeon-general of the U.S. army, b. Hartwick, N.Y., M.D. Columbia, 1860. He was assistant surgeon in the U.S. ar...

corticosteroid drug

(Encyclopedia)corticosteroid drug kôrˌtəkōstârˈoid [key], any one of several synthetic or naturally occurring substances with the general chemical structure of steroids. They are used therapeutically to mimic...