Cytotoxicity of Carbon Nanotubes on J774 Macrophages Is a Purification-Dependent Effect

Figure 3

Viability of MOs that interacted with UP-CNTs at different concentration at 24 h. Each bar represents mean ± SD of two experiments done in triplicates (𝑛=6). a, 𝑃<0.01 denotes significant differences between mean values measured in the indicated group as compared to control without stimulus (CTL); b, 𝑃<0.01 denotes differences between mean values for CNTs at different concentration; c, 𝑃<0.01 denotes differences between mean values for a particular concentration among different CNTs.