Fig. 1

Effect of storage condition on the fecal microbiota profile. a Venn diagram of abundant and rare operational taxonomic units (OTUs) defined as having mean relative abundance of > 0.01% and < 0.01% within each method, respectively. b α diversity across methods, and c across individuals. d β diversity based on Bray-Curtis dissimilarity for all and rare OTUs (mean relative abundance < 0.01%)