Inhibition of thrombus formation by inhibitory antiplatelet antibody 7E3 (abciximab) but not by low dose aspirin in the Endo-chip laser-injury model. (A) Blood was incubated with vehicle, aspirin (9 μg/mL), or abciximab (20 μg/mL) for 1 hour at RT. Blood was then labeled with anti-CD41 antibody and antifibrin antibody, recalcified with CaCl₂ (10 mM), and then immediately perfused through the Endo-chip at 100 s^–1, followed by laser injury to the endothelial layer. Representative images of platelet (CD41, green) and fibrin (magenta) accumulation at the injury site at 10 minutes. (B) Kinetics of platelet (upper panel) and fibrin (lower panel) surface area coverage over time. (C) Platelet (upper panel) and fibrin (lower panel) AUC after treatment of blood with vehicle, aspirin, or abciximab. Mean ± SD, n = 3 to 5, 1-way analysis of variance with Dunnett’s multiple comparisons test. AUC, area under the curve.