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Figure 2 Effects of anti-glycoprotein (GP) IIb/IIIa agents on platelet thrombus formation on the collagen surface under blood flow conditions. Fifteen ml of blood containing fluorescent platelets were perfused on the collagen surface for 6 min, either in the presence or absence of the anti-GP IIb/IIIa agents abciximab, eptifibatide, and tirofiban at the final concentrations shown in the figure. The results shown represent the mean and standard deviation of the eight sets of replicated experiments. The * and ** indicate values significantly lower than those in the absence of the anti-GP IIb/IIIa agents with the p value <0.05 and <0.01, respectively.