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Cytotoxicity of H1, H2, and H3 SNPs in RAW 264.7 macrophages after incubation for 24 h. Results suggest that all particles are well tolerated by macrophages in concentrations below 100 µg mL−1. The graphs are plotted as mean ± SD of three independent experiments (** p value < 0.01, *** p value < 0.001).
