The Arg-Gly-Asp (RGD) recognition site of platelet glycoprotein Ilb-IIIa on nonactivated platelets is accessible to high-affinity macromolecules - Tomiyama, Y; Tsubakio, T; Piotrowicz, R S; Kurata, Y; Loftus, J C; Kunicki, T J (Blood, 1992)