A2 (CRX2037904; CRA030774)
Genomic DNA was collected and purified;  The purified DNA was fragmented using a Covaris system to construct a genomic sequencing library;  Adapters A and B were ligated to the DNA fragments;  Self-ligated adapter fragments were removed by screening;  Agarose gel electrophoresis was performed to select DNA fragments, retaining those with adapter A at one end and adapter B at the other;  The selected fragments were denatured with sodium hydroxide to generate single-stranded DNA fragments.