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PM2.5 exposure induced NLRP3 inflammasome activation following OGD/R. (A, B) The expressions of NLRP3, ASC, pro‐caspase‐1, and Caspase‐1 in control, OGD/R, and OGD/R+PM2.5 groups. (C, D) The ELISA showed the production of inflammatory cytokines IL‐1β and IL‐18 in three groups. (E) Caspase‐1 activity was assessed after PM2.5 exposure under OGD/R state (*p < 0.05, **p < 0.01 vs. control; #p < 0.05, ##p < 0.01, ###p < 0.001 vs. OGD/R; n = 3)
