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Effect of NDN on the expression of inflammatory factors of mice. The production of IL-1β and TNF-α in the lung tissue was detected by ELISA (A,B). The expression level of CCL2 was determined using qRT-PCR (C). Gene expression was presented as fold changes and normalized to GAPDH. Data are presented as the means ± SD (n = 6/group). ** p < 0.01 vs. VC group, # p < 0.05 and ## p < 0.01 vs. PHMG group.
