Figure 1
From: Prevalence of porcine enterovirus 9 in pigs in Middle and Eastern China
Phylogenetic tree constructed by alignment of the 313 nt 5′-UTR sequence using Mega 4 software. A simian enterovirus strain is included as an out-group. The isolates identified in this study are marked with black (Middle China) and white (Eastern China) triangles. The two arrows show the two representative strains which were selected to determine the sequence of the RdRp gene.