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The dynamic changes of inflammatory factors in lung, BALF, blood and vessel after single PM2.5 exposure. The level of IL6 and TNF-α in lung, BALF, blood and vessel at 0, 0.5, 1, 6 and 24hrs after single PM2.5 exposure. (A) IL-6(n=10). (B)TNF-α(n=10). *P<0.05 compared with control group, **P<0.01 compared with control group, #P<0.05 compared with L-NAME group, # #P<0.01 compared with L-NAME.
