Figure 3.

In vitro effects of R-99224 (0.1 – 3 μg ml⁻¹) on platelet aggregation induced by ADP (A), collagen (B) and thrombin (C) in washed rat platelets. Results are expressed as the mean±s.e.mean (n=5 – 6). ^*P<0.05, ^**P<0.01 vs each control.