Fig. 6
From: Direct activation of platelets by addition of CaCl2 leads coagulation of platelet-rich plasma
SEM analysis of the surface microstructures of formed fibrin clots. a A fiber-like substance initially formed in Ca2+-treated PRP on a watch glass. b The fibrin clot formed in Ca2+-treated PRP on a watch glass. c The fibrin clot formed in Ca2+-treated PRP in a plastic culture dish. d The fibrin clot formed in PPP on a watch glass. e The fibrin clot formed in PRP in the presence of a collagen sponge in a plastic dish. Similar results were obtained from three other donors