title: Standard reference strains of Escherichia coli from natural populations.
abstract: A set of 72 reference strains of Escherichia coli isolated from a variety of hosts and geographical locations has been established for use in studies of variation and genetic structure in natural populations. The strains, which have been characterized by multilocus enzyme electrophoresis, are representative of the range of genotypic variation in the species as a whole.
mesh_terms: D000818:Animals; D004926:Escherichia coli / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D007527:Isoenzymes / Q000235:genetics
chemical_list: D007527:Isoenzymes