title: Escherichia coli: strains that excrete an inhibitor of colicin B.
abstract: Mutants exb of Escherichia coli are insensitive to colicin B and excrete into their culture media a material that inhibits colicin activity and that appears to be the bacterial lipopolysaccharide.
mesh_terms: D002904:Chromosomes, Human, 21-22 and Y; D003087:Colicins / Q000037:antagonists & inhibitors*; D003470:Culture Media; D004926:Escherichia coli / Q000378:metabolism*; D006801:Humans; D009154:Mutation; D011135:Polysaccharides, Bacterial / Q000302:isolation & purification*
chemical_list: D003087:Colicins; D003470:Culture Media; D011135:Polysaccharides, Bacterial