title: Phylogeny of immune responsiveness: marine invertebrates.
mesh_terms: D000818:Animals; D000845:Annelida / Q000276:immunology; D000917:Antibody Formation; D001181:Arthropods / Q000276:immunology; D001419:Bacteria / Q000276:immunology; D005075:Biological Evolution; D002449:Cell Aggregation; D003063:Cnidaria / Q000276:immunology; D004447:Echinodermata / Q000276:immunology; D056890:Eukaryota / Q000276:immunology; D006648:Histocompatibility; D007111:Immunity, Cellular; D007156:Immunologic Memory; D007448:Invertebrates / Q000276:immunology*; D007962:Leukocytes / Q000276:immunology; D008974:Mollusca / Q000276:immunology; D011161:Porifera / Q000276:immunology; D013045:Species Specificity; D014183:Transplantation, Heterologous; D014184:Transplantation, Homologous; D014561:Urochordata / Q000276:immunology; D014780:Viruses / Q000276:immunology