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A — Temporal trends in the prevalence of cephalosporin resistance among non-urinary E. coli isolates from dogs in the northeastern USA, 2004–2011.
FAZ — cefazolin; FOX — cefoxitin; CEP — cephalothin
B — Temporal trends in the prevalence of enrofloxacin and tetracycline resistance among non-urinary E. coli isolates from dogs in the northeastern USA, 2004–2011.
ENRO — enrofloxacin; TET — tetracycline
