Figure 4: Analysis of silver nanoparticles in platelet aggregation test. Silver nanoparticles with nominal size of 20 nm (A), 40 nm (B), 60 nm (C) and 80 nm (D), untreated or sterilized with various methods, were evaluated for their potential effects on the cellular component of the blood coagulation cascade. For each nanoparticle formulation, three independent samples were prepared and analyzed in duplicate (%CV < 20). Each bar represents the mean response of these three independent samples plus SD.