Fig. 2

Antimicrobial susceptibility of L. monocytogenes isolates from processing plants to eight antibiotics. Gentamicin (GEN), ampicillin (AMP), ceftazidime (CAZ), ciprofloxacin (CIP), tetracycline (TET), erythromycin (ERY), lincomycin (LIN) and vancomycin (VAN) were selected as test antibiotics. A:non-resistance, B:one-resistance, C:two-resistance, D:three-resistance, E:four-resistance, F: five-resistance, G:six-resistance, H:seven-resistance, I:eight-resistance. Streptococcus pneumonia ATCC 49619 was selected as the quality control strain