ROANTREE, R J MUTATIONS TO PENICILLIN RESISTANCE IN THE ENTEROBACTERIACEAE THAT AFFECT SENSITIVITY TO SERUM AND VIRULENCE FOR THE MOUSE. [electronic resource] - Journal of bacteriology Mar 1965 - 630-9 p. digital Publication Type: Journal Article ISSN: 0021-9193 Standard No.: 10.1128/jb.89.3.630-639.1965 doi Subjects--Topical Terms: AmpicillinAnimalsAntigen-Antibody ReactionsEnterobacteriaceaeEscherichia coliMiceMutationPenicillin GPenicillin ResistancePharmacologyResearchSalmonellaSalmonella enteritidisSalmonella typhimuriumVirulence