Host ranges of R factors.
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Anti-Bacterial Agents↗
Biomedical subjects
R W Hedges
Publications and source records attributed to R W Hedges.
R124, an fi R factor of a new compatibility class.
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Anti-Bacterial Agents↗
Trimethoprim resistance conferred by W plasmids in Enterobacteriaceae.
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Anti-Bacterial Agents↗
Resistance to spectinomycin determined by R factors of various compatibility groups.
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Drug Resistance, Microbial↗
R factors from Proteus rettgeri.
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Ampicillin↗
R factors conferring resistance to trimethoprim but not sulphonamides.
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Anti-Bacterial Agents↗
R factors identified in Paris, some conferring gentamicin resistance, constitute a new compatibility group.
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Ampicillin↗
Compatibility groups among fi - R factors.
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Ampicillin↗
Hypothesis for catabolite repression.
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Alanine↗
Test of a hypermutability model in Salmonella typhimurium trpA47s.
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DNA↗
Transduction mechanisms of bacteriophage epsilon 15. I. General properties of the system.
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Arabinose↗
Transduction mechanisms of bacteriophage epsilon 15. II. Isolation of a bacteriophage related to epsilon 15.
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Biological Evolution↗
Transduction mechanisms of bacteriophage epsilon 15. 3. A new class of mutations affecting the conversion of Salmonella anatum by bacteriophage epsilon 15.
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Lysogeny↗
A simple technique for the identification of chain termination suppressor mutants in species of Salmonella.
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Methods↗
Somatic antigen diversity in the genus Salmonella as a genetic polymorphism.
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Adaptation, Biological↗
Properties of an R factor from Pseudomonas aeruginosa.
An R factor from Pseudomonas aeruginosa, which confers resistance to penicillins, kanamycin, and tetracycline, was studied in Escherichia coli K-12. The R factor could coexist with F-like or I-like plasmids and therefore constituted a novel compatibility group. The R factor was transferable from E. coli to bacterial genera outside the Enterobacteriaceae (Pseudomonas and members of the Rhizobiaceae) to which transfer of F-like and I-like plasmids could not be demonstrated.
Ampicillin↗