title: Habitat specificity and correlated aminopeptidase activity in the acanthocephalans Neoechinorhynchus cristatus and N. crassus.
mesh_terms: D000222:Adaptation, Physiological; D000626:Aminopeptidases / Q000032:analysis*; D000818:Animals; D004463:Ecology; D005393:Fish Diseases / Q000453:epidemiology; D005399:Fishes; D005618:Fresh Water; D006373:Helminthiasis / Q000453:epidemiology; D006374:Helminthiasis, Animal; D006376:Helminths / Q000201:enzymology* / Q000302:isolation & purification; D007061:Idaho; D007422:Intestines; D013045:Species Specificity; D014861:Washington
chemical_list: D000626:Aminopeptidases