Phylogenetic anaylsis of klassevirus 1 sequence. Multiple sequence alignments were generated with klassevirus 1 and the corresponding regions of known picornaviruses using ClustalX. (A) P3 region, (B) P2, and (C) VP3/VP1. Paup was used to generate maximum parsimony phylogenetic trees. Bootstrap values > 700 from 1,000 replicates are shown. PTV: Porcine teschovirus; ERB: Equine rhinitis B virus.