Effect of Moxibustion on the Intestinal Flora of Rats with Knee Osteoarthritis Induced by Monosodium Iodoacetate

Figure 4

Analysis of the intestinal flora sequences in different groups. (a) Rarefaction curves. The horizontal coordinate shows the number of randomly selected sequence, and the vertical coordinate shows the number of OTUs based on the clustering of the sequencing lines. Each curve represents a sample, marked with different colors. (b) OTU Venn diagram. The numbers in overlapping parts between the different color patterns are the OTU amounts shared by the samples, and the numbers in nonoverlapping parts are the unique OTU amounts in each sample. (c) Weighted UniFrac PCoA analysis of the differences between the 4 groups. Points represent each sample separately; different colors represent different groups; the horizontal and vertical coordinates are the two characteristic values producing the greatest difference between samples, the horizontal coordinate represents PC1, the vertical ordinate represents PC2, and the percentage shows the main influence degree. (d) Rank-abundance curves. The abscissa is the number sorted by OTU abundance, and the ordinate is the relative abundance of the corresponding OTUs.

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