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Correlations between intestinal flora and ulcerative colitis indexes. Spearman correlations between intestinal microbiota and biochemical indexes or SCFAs in DSS, LVK2, MVK2, and HVK2 groups. Blue and red colors indicate negative and positive correlations, respectively. The strength of the Spearman correlation correlates directly with the color intensity. * p < 0.05 and ** p < 0.01.
