Figure 1: PFGE profiles of twenty 3GC-resistant Salmonella isolated from pork in slaughterhouse in China.

MIC, minimal inhibitory concentration; CTX, cefotaxime; CTF, ceftiofur; CTR, ceftriazone; CTZ, ceftazidime; ESBL, extended-spectrum β-lactamase; PFGE, pulsed-field gel electrophoresis. “-”, not detected; “R”, resistant; “S”, susceptible.