Fig. 4From: A draft genome of the striped catfish, Pangasianodon hypophthalmus, for comparative analysis of genes relevant to development and a resource for aquaculture improvementMolecular phylogenetic tree of MHC class I genes. Genes in the U, Z, and S lineages are expanded in the two catfishes, respectively. Numbers at nodes indicate bootstrap values. (Abbreviations: AM = Astyanyx mexicanus; danre = Danio rerio; Icpu = Ictalurus punctatus; phy = Pangasianodon hypophthalmus). *MHC class I sequences were used in previous study [60]Back to article page