Fig. 2.
A maximum-likelihood phylogenetic tree of selected coronavirus genomes. ACoV (GenBank accession no. DQ915164) was compared to other Group 2 Coronaviruses including porcine hemagglutinating encephalomyelitis virus (PHEV VW572, GenBank accession no. YP_459958); human coronavirus OC43 (HCoV-OC43, AY391777); bovine coronavirus Mebus strain (BCoV-Meb, U00735); bovine coronavirus Quebec strain (BCoV-Q, D00662); bovine coronavirus DB2 strain (BCoV-DB2, DQ811784); bovine coronavirus ENT strain (BCoV-ENT, Q91A22); bovine coronavirus LUN strain (BCoV-LUN, AF391542). The scale bar represents the genetic distance (nucleotide substitution per site).