Fig. 3

Effects of silica microparticles (MPs) on cell morphology in control A and phorbol 12-myristate 13-acetate (PMA)- B and dimethyl sulfoxide (DMSO)-treated HL60 cells (C). These cells were simultaneously treated with silica MPs for 3 days and examined microscopically without fixation. Similar data were obtained from two additional independent experiments (n = 3)