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The heatmap of the redundancy analysis (RDA)-identified key OTUs signifying the most differentially abundant taxon in jejunum microbiota in response to melatonin supplementation. (a) Heatmap showing the relative abundance of the RDA-identified 80 key OTUs that were significantly altered by melatonin in SR mice. (b) Representative bacterial taxon information (genus, family, and phylum) of OTUs from (a) are shown.
