wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX183/SRX183520/SRR567536/SRR567536.sra -O GAF_ChIP-seq-GSM998826-1.sra
wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX183/SRX183520/SRR567537/SRR567537.sra -O GAF_ChIP-seq-GSM998826-2.sra
wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX183/SRX183521/SRR567538/SRR567538.sra -O GAF-KD_GAF_ChIP-seq-GSM998827-1.sra
wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX183/SRX183521/SRR567539/SRR567539.sra -O GAF-KD_GAF_ChIP-seq-GSM998827-2.sra