Persistence of tetracycline resistance in pig E. coli

Transfer Factors in Escherichia coli with Particular Regard to Their Incidence in Enteropathogenic Strains

Howard W. Smith, M. A. Linggood · Journal of General Microbiology · 1970 · 48 citations

Life Sciences, Microbiology, Veterinary Microbiology +11

Effect of Prohibition of the Use of Tetracyclines in Animal Feeds on Tetracycline Resistance of Faecal E. coli of Pigs

H. Williams Smith · Nature · 1973 · 21 citations

Agriculture, Animal Sciences, Veterinary Microbiology +15

The Activity of Different Transfer Factors Introduced into the Same Plasmid-containing Strain of Escherichia coli K12

Howard W. Smith, E.D. Heller · Journal of General Microbiology · 1973 · 20 citations

Life Sciences, Microbiology, Molecular Genetics +17