aprotinin

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aprotinin (ă-proh-tin-in) n. a drug that prevents the breakdown of blood clots (fibrinolysis) by blocking the action of the enzyme plasmin, i.e. it is an antifibrinolytic drug. It is administered by injection to control the severe bleeding that may occur in certain cancers, with fibrinolytic treatments, and during open-heart surgery. Trade name: Trasylol.