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Effects of lead exposure on intestinal flora OTUs and biodiversity in rats. (a) OTUs set partition Wayne graph. (b) sparseness curve between sequence number and OTUs number. (c–f) Correlation indexes for α-diversity analysis of intestinal microbial community chao1, Shannon, Simpson, and ACE. (g) Principal component analysis of rats in the two groups. ∗P < 0.05 and ∗∗P < 0.01 vs. control group.
