Affinity modulation of the alllb(33integrin (platelet GPIIb-IIIa) is an intrinsic property of the receptor - O’Toole, T E; Loftus, J C; Du, X; Glass, A A; Ruggeri, Z M; Shattil, S J; Plow, E F; Ginsberg, M H (Cell Reg, 1990)