Protein-tyrosine phosphorylation and p72syk activation in human platelets stimulated with collagen is dependent upon glycoprotein Ia/IIa and actin polymerization - Asazuma, N; Yatomi, Y; Ozaki, Y; Qi, R; Kuroda, K; Satoh, K; Kume, S (Thromb Haemost, 1996)