批量下载数据

http://blog.sciencenet.cn/blog-54276-1024373.html
从NCBI批量下载序列
https://edwards.sdsu.edu/research/ncbi-sequence-or-fasta-batch-download-using-entrez/
Three easy ways to download multiple sequences from NCBI
https://www.ncbi.nlm.nih.gov/sites/batchentrez