Spontaneous mutation in spheroplasts of Escherichia coli.
D004926:Escherichia coli; D006639:Histidine; D009154:Mutation; D010406:Penicillins; D013104:Spheroplasts
D010406:Penicillins; D006639:Histidine
ESCHERICHIA COLI; HISTIDINE; PENICILLIN