Phylogenetic tree showing the relationship of salmon T-bet gene with other known vertebrate members of the Tbr1 subfamily. The phylogram was constructed on ClustalX2 and MEGA 4.1. The neighbor-joining (N-J) method with bootstrap values of 1000 replications was adopted. Accession numbers or ENSEMBL gene IDs are as follows: Human (Homo sapiens) Eomes, NP_005433; Mouse (Mus musculus) Eomes, NP_034266; Cattle (Bos taurus) Eomes, NP_001178117; Frog (Xenopus laevis) Eomes, NP_001081810; Chicken (Gallus gallus), Eomes, XP_426003; Zebrafish (Danio rerio) Eomes a, NP_571754; Zebrafish Eomes b, NP_001077044; Salmon (Salmo salar) Eomes, EU418014; Amphioxus (Branchiostoma floridae) Eomes/Tbr1/Tbx21, AF262568; Human Tbr1, NP_006584; Mouse Tbr1, NP_033348.2; Cattle Tbr1, NP_001178978; Zebrafish Tbr1, NP_001108562; Human T-bet, NP_037483; Mouse T-bet, NP_062380; Cattle T-bet, NP_001179069; Pig (Sus scrofa) T-bet, ENSSSCP00000018565; Frog T-bet, NP_001088247; Lizard (Anolis carolinensis) T-bet, ENSACAP00000006911; Medaka (Oryzias latipes) T-bet, ENSORLP00000015259; Fugu (Takifugu rubripes) T-bet, ENSTRUP00000032964; Stickleback (Gasterosteus aculeatus) T-bet, ENSGACP00000005023; Tetraodon (Tetraodon nigroviridis) T-bet, ENSTNIP00000013001; Zebrafish T-bet, NP_001164070; Crucian carp (Carassius auratus langsdorfii) T-bet, BAF73805.1; Trout (Oncorhynchus mykiss) T-bet, NM_001182722.