strain_id	description	flag	length
NZ_CP038292.1	Escherichia coli O157:H7 strain TB21-1 chromosome, complete genome	genbank	5498884
NZ_CP038293.1	Escherichia coli O157:H7 strain TB21-1 plasmid pTB21-1, complete sequence	genbank	95611
NZ_CP038294.1	Escherichia coli O157:H7 strain TB21-1 plasmid pTB21-2, complete sequence	genbank	3171
