Fig. 4.
Phylogeny of interferon amino acid sequences from devil, opossum, human, mouse and chicken. Maximum likelihood tree with 1000 bootstrap resamplings. Bootstrap value greater than 50 % only are displayed. Devil, opossum, human, mouse and chicken sequences are indicated by red, yellow, blue, cyan and green dots respectively. Mammalian IFNB, IFNG and IFNK form single clades