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The autophagy inhibitor 3-MA reduces PM2.5-induced apoptosis and death. (A) Apoptosis was analyzed with Annexin V-FITC and PI staining, and observed under a fluorescent microscope. Scale bar = 50 μm. (B) Statistics of Annexin V-FITC positive cells. (C) Statistics of PI positive cells. Values are mean ± SD. *p < 0.05 versus the control group; #p < 0.05 versus the PM2.5 treatment alone group.
