Fig. 1
Cytotoxicity of PM2.5 and/or glucose on MH-S cells. a and b The cells were treated with PM2.5 or glucose for 24 h. c The cells were pretreated with 30 mM of glucose for 18 days, followed by treatment with PM2.5 for 24 h. Mannitol was used as an osmolality control. The cells treated with physiological saline were used as control. Cytotoxicity was determined by MTS assay (Promega). Data are shown as mean ± SEM (n = 6). * p < 0.05 vs. control