Fig. 3

Detection of amplification product of different virulence genes: A hla gene by PCR; lane 1: negative control, lane 2: positive control and lanes 3 to 10: positive PCR products (209 bp); B sea gene by PCR; lane 1: positive control, lane 2: negative control and lanes 3 to 11: positive PCR products (120 bp); C icaA gene by PCR; lane 1: positive control, lane 2: negative control and lanes 3 to 10: positive PCR products (770 bp); D fnbA gene by PCR; lanes 1 to 7: positive PCR products (1279 bp), lane 8: positive control and lane 9: negative control