AlHV-sema is phylogenetically close to mammalian sema7A. Phylogenetic analysis of mammalian sema7A and viral homologs. The sequences were extracted from public databases GenBank and Ensembl and were aligned with MUSCLE, and a maximum-likelihood tree was computed as described in Materials and Methods. The accession numbers are as follows: AlHV-1, NP_065506; AlHV-2, YP_009044389; OvHV-2, YP_438129; vaccinia virus, AAA48169; variola virus, NP_042192; fowlpoxvirus, NP_039010; camelpoxvirus, NP_570549; cowpoxvirus, NP_619959; ectromelia virus, NP_671658; canarypoxvirus, NP_955088; taterapoxvirus, YP_717471; Anas platyrhynchos, ENSAPLP00000010932; Anolis carolinensis, ENSACAP00000016773; Takifugu rubripes, ENSTRUP00000034641; Oryzias latipes, ENSORLP00000009077; Gasterosteus aculeatus, ENSGACP00000006179; Tetraodon nigroviridis, ENSTNIP00000011250; Rattus norvegicus, NP_001101623; Equus caballus, XP_001917710; Bos taurus, NP_001193114; Gallus gallus, NP_001186678; Homo sapiens, NP_003603; Mus musculus, NP_035482; and Danio rerio, XP_002663156.