Fig. 1.

(A) PCR amplification of cadF (400 bp): Lane1, positive control (C. jejuni ATCC 29428), lanes 2-6, patient or food samples with positive results; lane7, negative control. (B) PCR amplification of hipO (735 bp): Lane1, negative control, lane 2, positive control (C. jejuni ATCC 29428), lanes 3-6, patient or food samples. (C) PCR amplification of asp (500 bp): lane1, positive control (C. coli ATCC 43478); lanes 2-6, patient or food samples; lane 7, negative control. Ma, 1 kb DNA ladder (Fermentas, USA) and Mb, 100 bp DNA ladder (Fermentas, USA). Negative control is DNA from Escherichia coli ATCC 25922