Relative abundances of operational taxonomic units (OTUs).

<p>Heatmap showing the relative abundances of 70 OTUs and their taxonomic assignment acquired by using the Ribosomal Database Project classifier. Taxa names in brackets are annotations supplied by the Greengenes database and are not officially accepted by the Society for General Microbiology. HET, <i>Tcra</i>^−/+ mice not exposed to repeated water-avoidance stress (rWAS); CON, <i>Tcra</i>^−/− mice not exposed to rWAS; RES, <i>Tcra</i>^−/− mice resistant to rWAS-induced colitis, SEN, <i>Tcra</i>^−/− mice sensitive to rWAS-induced colitis.