[Principal stages of the celomic development of a gregarine parasite of the polychete Perinereis cultrifers Grube].
D000818:Animals; D000845:Annelida / Q000469:parasitology*; D016782:Apicomplexa / Q000502:physiology*; D010271:Parasites; D011077:Polychaeta
ANNELIDA/parasitology; SPOROZOA/physiology