Intramammary preparations and cephalosporin resistance in S typhimurium.
Guard
P W
PW
O'Rourke
D
D
D000818:Animals; D002417:Cattle; D002511:Cephalosporins / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D005260:Female; D012486:Salmonella typhimurium / Q000187:drug effects*
D002511:Cephalosporins