K Li, R Cao, S Mo, R Yao, Z Ren, J Wu Frontiers in Microbiology,2020 frontiersin.org … DNA Extraction and qPCR. Total genomic DNA was extracted using the Fecal DNA Kit (Simgen, Hangzhou, China) according to the manufacturer's instructions… The high-throughput sequencing method is consistent with Li et al. (2020)…