Yoshikawa, M Drug sensitivity and mutability to drug resistance associated with the presence of an R factor. [electronic resource] - Genetical research Feb 1971 - 1-7 p. digital Publication Type: Journal Article Standard No.: 10.1017/s0016672300011988 doi Subjects--Topical Terms: Acridines--pharmacologyCell SurvivalDrug Resistance, MicrobialEscherichia coli--drug effectsGenetics, MicrobialKanamycin--pharmacologyKineticsMutationNalidixic Acid--pharmacologyQuinacrine--pharmacology