Fig. 4
From: Direct activation of platelets by addition of CaCl2 leads coagulation of platelet-rich plasma

Flow cytometric analysis of changes in surface marker expression in Ca2+-stimulated platelets. Washed platelets were prepared and treated as described in the caption of Fig. 1a. a–d Representative scatter plots of CD41+ and CD62P+ platelets. e Effects of Ca2+ on percentages of double-positive platelets in whole platelet populations (N = 11). f Effects of Ca2+ on platelet volume (N = 12). Asterisks indicate statistically significant differences between the control data and treatment data