Escherichia coli strain B171. This strain (B171 ; serotype O111:NM) is an enteropathogenic E. coli (EPEC) and is a member of the EPEC2 subgroup. This strain was provided by Dr. James B. Kaper from the
Bacterial plasmids are self-replicating, extrachromosomal elements associated with a variety of phenotypic traits including virulence, enhanced fitness, and resistance to antimicrobial agents. They pl