Platelet glycoprotein IIb/IIIa protein antagonists from snake venom: Evidence for a family of platelet-aggregation inhibitors - Dennis, M S; Henzel, W J; Pitti, R M; Lipari, M T; Napier, M A; Deisher, T A; Bunting, S; Lazarus, R A (Proc Natl Acad Sci USA, 1989)