Phylogenetic relationships between sod1 and sod2 sequence from fugu and sod sequences from other vertebrates. Accession numbers of the sequences used for phylogenetic tree are the following: Fugu Sod1/Sod2: HE602549, HE602550, Tetraodon Sod1/Sod2/Sod3: H3CX53, Q4S6V6, H3D497; Japanese medaka HDrR Sod1/Sod2: XP_004076261, GCA_002234675, Zebrafish Sod1/Sod2/Sod3: NP_571369, NP_956270, XP_001332758, Mouse Sod1/Sod2/Sod3: NP_035564, NP_038699.2, NP_035565, Human Sod1/Sod2/Sod3: NP_000445, NG_008729, NP_003093.