Mouse 16S rRNA gene sequencing
DNA extraction from the feces and 16S rRNA amplicon sequencing were performed by Noster Corporation (Kyoto, Japan) with the QIAamp DNA Microbiome Kit. For the paired-end sequencing with the MiSeq system (Illumina), the MiSeq Reagent Kit v3 and PhiX Control Kit v3 (Illumina) were used