sequences of bacteria
Genomic DNA was extracted and purified from feces with the QIAamp DNA stool mini kit. The resulting DNA was quantified with Quant-iTTM PicoGreen reagent. The sequencing of 16S rRNA amplicons (V1-V3 region) was performed by MiSeq 300PE at Majorbio. Primers used in present study was 27F (5-AGAGTTTGATCCTGGCTCAG-3) and 533R (5-TTACCGCGGCTGCTGGCAC-3).