C4 (CRX1752815; CRA026403)
The intestinal contents of the mice were collected using sterile instruments, the total DNA was extracted and quantified by Nanodrop, the PCR amplification was carried out using Quanshijin's Pfu high-fidelity DNA polymerase, the sequencing libraries were prepared using Illumina's TruSeq Nano DNA LT Library Prep Kit, and the library enrichment products were purified again using BECKMAN AMPure XP Beads.