Identification of two distinct regions within the binding sites for fibrinogen and fibronectin on the II b-III a human platelet membrane glycoprotein complex by monoclonal antibodies P2 and P4. - McGregor, Johan I.; McGregor, Lilian; Bauer, Anne-Sylvie; Catimel, Bruno; Brochier, Jean; DeChavanne, Marc; Clemetson, Kenneth J. (European Journal of Biochemistry, 1986)