Fig. 8. Cell surface co-localization of CD41, CD61, and fibrinogen on E9.5 yolk sac cells. (A) CD41 (y axis) and CD61 (x axis) expression on E9.5 yolk sac cells indicates a significant percentage of the total cells co-express these markers. (B) E9.5 yolk sac cells expressing CD61 (12.1% of total cells) were isolated from non-expressing cells and further analyzed (C,D) for co-localization of CD41 and fibrinogen. (C) CD61^- cells failed to demonstrate significant co-localization of CD41 and fibrinogen while CD61⁺ yolk sac cells (D) highly co-localized CD41 and fibrinogen (30.1% of the CD61⁺ cells). Data are representative of 4 experiments.