SRR201778 GSM720820_1 SRX061853 GSM720820: MCF7_pe_35bp read_name_barcode_proc_directive ignore SRR201779 GSM720821_1 SRX061854 GSM720821: VCaP_pe_53bp read_name_barcode_proc_directive ignore SRR201780 GSM720822_1 SRX061855 GSM720822: LNCaP_pe_34bp read_name_barcode_proc_directive ignore