title: Phylogeny of immune responsiveness in invertebrates.
mesh_terms: D000818:Animals; D000845:Annelida / Q000276:immunology; D001181:Arthropods / Q000276:immunology; D005075:Biological Evolution; D003386:Brachyura / Q000276:immunology; D002459:Cell Fusion; D003063:Cnidaria / Q000276:immunology; D003260:Contact Inhibition; D004372:Ducks / Q000276:immunology; D004447:Echinodermata / Q000276:immunology; D004912:Erythrocytes / Q000276:immunology; D006801:Humans; D007109:Immunity; D007111:Immunity, Cellular; D007448:Invertebrates / Q000276:immunology*; D008974:Mollusca / Q000276:immunology; D010125:Ostreidae / Q000276:immunology; D012617:Sea Urchins / Q000276:immunology; D013045:Species Specificity; D014184:Transplantation, Homologous