Fig. 3From: The mechanism of nicotinamide on reducing acute lung injury by inhibiting MAPK and NF-κB signal pathwayThe expression of MPO and pro-inflammatory mediators in lung. a MPO activity test results. b–d The protein levels of IL-6, IL-1β and TNF-α. The values are presented as the mean ± SD (*p < 0.05, **p < 0.001, ***p < 0.001 and ****p < 0.0001)Back to article page