Surface expression of platelet adhesion receptors from different mouse strains. Mouse platelets were analyzed by flow cytometry using fluorescently labeled monoclonal antibodies anti-CD41 (A), anti-CD61 (B), Pop4 (C), Hal/29-an antimouse integrin α₂ (D), HMα2-an antirat integrin α₂ (E), and JAQ1 (F). Analyses in panels A-E were performed 7 times. In panel F, analyses were performed 5 times for FVB and C57, and 2, 3, and 4 times for C3H, BALB, and 129, respectively. MFI indicates mean fluorescence intensity. Data are means ± SD.