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The shift of oral microbiota between periodontitis and control samples at the genus level A. The difference in relative abundance of each genus between periodontitis and control samples among the top 30 genera. The significantly differential relative abundance for genera was marked by red (Wilcoxon rank sum test). B. Rarefaction curve at the species level. C. Genus biomarkers in periodontitis and control samples were depicted by LEfSe analysis (LDA > 3).
