Platelet aggregation is not affected by treatment with iMer in the absence of GAS6. Human PRP was treated with antibody to deplete GAS6 and then incubated with 5 μM iMer (red) or vehicle control (green) before platelet activation was stimulated with 1 to 2 mM ADP. Median values and error bars denoting IQR from 3 experiments are shown (P = ns, Wilcoxon signed pairs rank test).