wget ftp.sra.ebi.ac.uk/vol1/fastq/SRR136/010/SRR13668410/SRR13668410.fastq.gz -O ydhB_1.fastq.gz
wget ftp.sra.ebi.ac.uk/vol1/fastq/SRR136/011/SRR13668411/SRR13668411.fastq.gz -O ydhB_2.fastq.gz