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Effect of different ammonia concentrations on mRNA expression. (A) Relative NLRP3 mRNA expression of control group and 35-ppm group at 7 D and 21 D. (B) Relative caspase-1 mRNA expression of control group and 35-ppm group at 7 D and 21 D. The time from left to right is 7 D and 21 D, respectively. ∗∗P < 0.01 and ∗P < 0.05 indicate significant differences between the 2 groups.
