Fig. 8From: Dietary supplementation of Macleaya cordata extract and Bacillus in combination improve laying performance by regulating reproductive hormones, intestinal microbiota and barrier function of laying hensEffects of dietary supplementation with different biological feed additives on the relative mRNA expression of cytokines (A) and apoptosis factors (B). Data are presented as means ± SEM (n = 3). Different lowercase letters indicate a significant difference (P < 0.05). IL: interleukin; TNF-α: tumor necrosis factor-αBack to article page