Relative abundances of the main bacterial groups.

Data are expressed as mean ± standard deviation (SD) for phylum, family and genus phylogenetic levels. Only bacterial groups with an average relative abundance >1% in at least one of the two experimental groups are listed; for each, significant p-values of the non-parametric Mann-Whitney test are reported.在门、科、属系统发育水平层面，数据以平均值±标准差（standard deviation, SD）的形式呈现。仅列出在两个实验组中至少一组的平均相对丰度大于1%的细菌类群；针对每一类群，均报告了非参数曼-惠特尼（Mann-Whitney）检验的统计学显著性p值。