Figure 1From: Effect of surface properties of silica nanoparticles on their cytotoxicity and cellular distribution in murine macrophages Effect of unmodified and modified nanosilica on cell proliferation. The proliferation of RAW 264.7 cells after incubation with nSP70 (circle), nSP70-N (square), or nSP70-C (triangle) for 24 h was evaluated using the 3H-thymidine incorporation assay. The percentage increase in cell proliferation was calculated relative to the negative control. Data are presented as means ± SD.Back to article page