How to download contig data for one species We use Chimpanzee(reference genome version : Clint_PTRv2) as an examplpe to explain how to download contig data. If you need download other specied contig data, you can follow these step. 1. search species information from Assembly Database in NCBI, https://www.ncbi.nlm.nih.gov/assembly/GCF_002880755.1 , we can get the WGS project ID, NBAG03, click the link. 2. Then click WGS 3. Then you will enter Sequence Set Browser Database. https://www.ncbi.nlm.nih.gov/Traces/wgs/NBAG03?display=contigs 4. Download all contig fasta data. Then you need combine all contig fasta to one fasta file, and index the combined fasta file(you can use samtool index to do this)