title: Normol1
design: Fecal samples were collected within 15 min of defecation and stored at liquid nitrogen within 1 hour. DNA extraction was performed with the QIAamp DNA Stool Kit (Qiagen, California, USA). The bacterias 16S ribosomal RNA (rRNA) gene were PCR amplified using primers binding to the V3-V4 regions. and the resulting amplicons were .purified by gel extraction (AxyPrep DNA GelExtraction Kit, Axygen Biosciences, Union City, California, USA) and then quantified and sequenced on the Illumina MiSeq platform (Illumina, San Diego, USA) with paired-end 300-nucleotide reads. The 16S rRNA sequencing data were analyzed by the Quantitative Insights Into Microbial Ecology platform (V.1.9.1).