The biology of the acanthocephala.
D000818:Animals; D001715:Bird Diseases; D005399:Fishes; D006374:Helminthiasis, Animal; D006376:Helminths / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development / Q000378:metabolism / Q000502:physiology; D006651:Histocytochemistry; D012098:Reproduction