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Phylogenetic analysis of Na+/K+-ATPase (Nka) α1, Nkaα2, and Nkaα3 from gills of Himantura signifer. A phylogenetic tree illustrating the relationships between Nkaα1, Nkaα2, and Nkaα3 of H. signifer and other NKAα/Nkaα isoforms of selected vertebrates.
