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actinomycin

(Encyclopedia) actinomycinactinomycinăkˌtənōmīˈsən [key], any one of a group of antibiotics produced by bacteria of the genus Streptomyces. Actinomycin was the first antibiotic reported to be able to…

lymphoma

(Encyclopedia) lymphoma, a cancer of the tissue of the lymphatic system. There are two categories of lymphomas. One type is termed Hodgkin's disease, the other, non-Hodgkin's lymphoma (see lymphoma,…

Love Canal

(Encyclopedia) Love Canal, section of Niagara Falls, N.Y., that formerly contained a canal that was used as chemical disposal site. In the 1940s and 50s the empty canal was used by a chemical and…

chemotherapy

(Encyclopedia) chemotherapychemotherapykēˌmōthĕrˈəpē [key], treatment of disease with chemicals or drugs. One chemotherapeutic approach is the development of selectively toxic substances, i.e.,…

Tasmanian devil

(Encyclopedia) Tasmanian devil, extremely voracious marsupial, or pouched mammal, of the dasyure family, now found only on the island of Tasmania. The Tasmanian devil, Sarcophilus harrisi, formerly…

birthmark

(Encyclopedia) birthmark, pigmented maldevelopment of the skin that varies in size, either present at birth or developing later. Birthmarks may appear as moles (melanocytic nevi) that vary in color…

Warburg, Otto Heinrich

(Encyclopedia) Warburg, Otto HeinrichWarburg, Otto Heinrichŏtˈō hīnˈrĭkh värˈb&oobreve;rkh [key], 1883–1970, German physiologist. He was director (1931–53) of the Kaiser Wilhelm Institute (now…

Uppsala, University of

(Encyclopedia) Uppsala, University of, at Uppsala, Sweden; founded 1477 by Sten Sture, the Elder, and Archbishop Jakob Ulvsson. Its activities were suspended in 1510 as a result of religious disputes…

Sloan, Alfred Pritchard, Jr.

(Encyclopedia) Sloan, Alfred Pritchard, Jr., 1875–1966, American businessman and philanthropist, b. New Haven, Conn., grad. Massachusetts Institute of Technology, 1895. He began his career as a…

Sims, James Marion

(Encyclopedia) Sims, James Marion, 1813–83, American gynecologist and surgeon, b. Lancaster co., S.C., M.D. Jefferson Medical College, Philadelphia, 1835. He initially practiced in Mt. Meigs and…