The Arg-Gly-Asp (RGD) recognition site of platelet glycoprotein IIb-IIIa on nonactivated platelets is accessible to high-affinity macromolecules - Tomiyama, Y; Tsubakio, T; Piotrowicz, RS; Kurata, Y; Loftus, JC; Kunicki, TJ (Blood, 1992)