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ulcer

(Encyclopedia) ulcer, open sore or circumscribed erosion, usually slow to heal, on the skin or mucous membranes. It may develop as a result of injury; because of a circulatory disturbance, e.g., in…

Crofton, Sir John Wenman

(Encyclopedia) Crofton, Sir John Wenman, 1912–2009, British physician, b. Dublin. He served in the British medical corps during World War II and during 1946–52 was part of a research team studying…

colchicine

(Encyclopedia) colchicinecolchicinekŏlˈchəsēnˌ [key], alkaloid extracted from plants of the genus Colchicum and especially from the corms of the autumn crocus, Colchicum autumnale (see meadow saffron…

Hansberry, Lorraine

(Encyclopedia) Hansberry, Lorraine, 1930–65, American playwright, b. Chicago, studied Univ. of Wisconsin, Madison, the New School, New York City. She grew up in a middle-class family on Chicago's…

antisense

(Encyclopedia) antisense, DNA or RNA manipulated in a laboratory so that its components (nucleotides) form a complementary copy of normal, or “sense,” messenger RNA (mRNA; see nucleic acid).…

Doherty, Peter Charles

(Encyclopedia) Doherty, Peter Charles, 1940–, Australian immunologist, Ph.D., Univ. of Edinburgh, 1970. He was a research fellow at Australian National Univ. (1972–75), a professor at the Wistar…

Köhler, Georges Jean Franz

(Encyclopedia) Köhler, Georges Jean FranzKöhler, Georges Jean Franzkōˈlər, Ger. köˈlər [key], 1946–95, German immunologist, Ph.D. Univ. of Freiburg, 1974. He worked (1974–76) with César Milstein at…

Koop, C. Everett

(Encyclopedia) Koop, C. Everett (Charles Everett Koop), 1916–2013, American physician, U.S. surgeon general (1982–89), b. Brooklyn, N.Y., grad. Dartmouth (B.S., 1937), Cornell Medical College (M.D.,…

nitrogen mustard

(Encyclopedia) nitrogen mustard, any of various poisonous compounds originally developed for military use (see poison gas). Like mustard gas and lewisite, it is a vesicant (blistering agent). In the…

Buck, Linda B.

(Encyclopedia) Buck, Linda B., 1947–, American neurobiologist, b. Seattle, Wash., Ph.D. Univ. of Texas Southwestern Medical Center, 1980. Buck taught…