Figure 1: Phylogenetic relationship of CmeC from diverse C. jejuni strains. The amino acid based dendrogram was constructed by neighbor-joining methods in MEGA 4.0. The strains with ‘JL’ prefix were used for cmeC gene amplification and sequencing in this study and the complete cmeC sequences of these strains have been deposited in GenBank. The CmeC sequences of other strains are the public database NCBI (http://www.ncbi. nlm.nih.gov/).