title: Antimutation effect of an E. coli membrane fraction on UV-mutagenesis.
mesh_terms: D000693:Anaerobiosis; D002458:Cell Fractionation; D002462:Cell Membrane / Q000032:analysis; D004926:Escherichia coli / Q000032:analysis / Q000235:genetics* / Q000528:radiation effects; D009154:Mutation; D014466:Ultraviolet Rays