Fig. 4.
Phylogenetic analyses of all available CRCoV strains based on HE, M, N and S genes. The BJ232, BJ221, BJ34 and BJ202 strains come from China in this research,K37, K39 and K9 strains were collected from South Korea, and the 240/05 and 4182 strains were derived from Italy and the United Kingdom, respectively. All the genes were analyzed by PhyML program using the maximum likelihood method, with 500 bootstrap replicates.