The ultrastructure and distribution of fibrinogen, von Willebrand factor and glycoprotein IIb/IIIa complex inplatelet alpha granules by cryo-ultramicrotomy - Ohga, S; Hamamoto, K; Kitajima, H; Nagata, H; Nomura, S; Kimura, T; Fujitake, H; Kokawa, T; Yasunaga, K (Int J Hematol, 1992)