Opercular cyst formation in trout infected with Myxosoma cerebralis.
D000818:Animals; D016782:Apicomplexa; D003560:Cysts / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D005393:Fish Diseases / Q000469:parasitology / Q000473:pathology; D011528:Protozoan Infections / Q000469:parasitology / Q000473:pathology; D011529:Protozoan Infections, Animal; D012487:Salmonidae; D014337:Trout