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Wassermann, August von

(Encyclopedia)Wassermann, August von wŏsˈərmən, Ger. ouˈgo͝ost fən väsˈərmän [key], 1866–1925, German physician and bacteriologist. In Berlin he was director of the department of experimental therapy a...

Baldwin IV, Latin king of Jerusalem

(Encyclopedia)Baldwin IV (Baldwin the Leper), c.1161–1185, Latin king of Jerusalem (1174–85), son and successor of Amalric I. Raymond, count of Tripoli, was regent from 1174 to 1176. Baldwin was constantly enga...

World Health Organization

(Encyclopedia)World Health Organization (WHO), specialized agency of the United Nations, established in 1948, with its headquarters at Geneva. WHO admits all sovereign states (including those not belonging to the U...

Guy of Lusignan

(Encyclopedia)Guy of Lusignan lüsēnyäNˈ [key], d. 1194, Latin king of Jerusalem (1186–92) and Cyprus (1192–94), second husband of Sibylla, sister of King Baldwin IV of Jerusalem. In 1183 he was briefly rege...

sulfa drug

(Encyclopedia)sulfa drug, any of a class of synthetic chemical substances derived from sulfanilamide, or para-aminobenzenesulfonamide. Sulfa drugs are used to treat bacterial infections, although they have largely ...

tropical medicine

(Encyclopedia)tropical medicine, study, diagnosis, treatment, and prevention of certain diseases prevalent in the tropics. The warmth and humidity of the tropics and the often unsanitary conditions under which so m...

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 enters the fang by ...

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 varicose veins or...

Robert I, king of Scotland

(Encyclopedia)Robert I or Robert the Bruce, 1274–1329, king of Scotland (1306–29). He belonged to the illustrious Bruce family and was the grandson of that Robert the Bruce who in 1290 was an unsuccessful claim...

syphilis

(Encyclopedia)syphilis sĭfˈəlĭs [key], contagious sexually transmitted disease caused by the spirochete Treponema pallidum (described by Fritz Schaudinn and Erich Hoffmann in 1905). Syphilis was not widely reco...

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