The evolution of adaptive immunity in vertebrates.
D000220:Adaptation, Biological; D000818:Animals; D005075:Biological Evolution; D005399:Fishes / Q000276:immunology; D007109:Immunity; D007448:Invertebrates / Q000276:immunology; D008322:Mammals / Q000276:immunology; D014714:Vertebrates / Q000276:immunology*