Sensitivity patterns of Escherichia coli isolated from calves during and following prophylactic chlortetracycline therapy.
D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002417:Cattle / Q000382:microbiology*; D002751:Chlortetracycline / Q000627:therapeutic use*; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification
D000900:Anti-Bacterial Agents; D002751:Chlortetracycline