Histogram of annexin V-binding reflecting phosphatidylserine exposure in a representative experiment of erythrocytes from annexin7-deficient mice (anx7−/−) and their wild type control mice (anx7+/+) exposed for 30 min to Ca2+ ionophore ionomycin (1 µM). B. Arithmetic means ± SEM (n = 8−9) of the percentage of annexin V-binding erythrocytes from annexin7-deficient mice (anx7−/−, black bars) and their wild type control mice (anx7+/+, white bars) exposed for 30 min to Ringer without (left bars) or with (right bars) ionomycin (1 µM). ### significant (p<0.001) difference from absence of ionomycin, *** significant difference (p<0.001) from anx7+/+ erythrocytes (ANOVA). C. Arithmetic means ± SEM (n = 8−9) of the forward scatter of erythrocytes from annexin7-deficient mice (anx7−/−, black bars) and their wild type control mice (anx7+/+, white bars) exposed for 30 min to Ringer without (left bars) or with (right bars) ionomycin (1 µM). ### significant (p<0.001) difference from absence of ionomycin, *** significant difference (p<0.001) from anx7+/+ erythrocytes (ANOVA). D. Arithmetic means ± SEM (n = 6) of the number of erythrocytes from annexin7-deficient mice (anx7−/−, black bars) and their wild type control mice (anx7+/+, white bars) adhering to the human umbilical vein endothelial cells (HUVEC) following exposure for 30 min to Ringer without (left bars) or with (right bars) ionomycin (1 µM). ### significant difference (p<0.001) from absence of ionomycin, *** significant difference (p<0.001) from anx7+/+ erythrocytes (ANOVA).