strain_id	description	flag	length
NZ_CP038357.1	Escherichia coli O157:H7 strain F7508 chromosome, complete genome	genbank	5545879
NZ_CP038359.1	Escherichia coli O157:H7 strain F7508 plasmid pF7508-1, complete sequence	genbank	92704
NZ_CP038358.1	Escherichia coli O157:H7 strain F7508 plasmid pF7508-2, complete sequence	genbank	3306
