title: Fine structure of an unidentified protozoon in the epithelium of rainbow trout exposed to water with Myxosoma cerebralis.
abstract: An intracellular protozoon was discovered in the epithelium of young rainbow trout (Salmo gairdneri) exposed for as short a time as 1 hr to water known to contain infective stages of Myxosoma cerebralis. Light- and electron-microscopic examination of this tissue revealed what appeared to be a proliferative stage (presumptive schizont) of a sporozoon; other possible stages in the life cycle were also observed. The relationship of this unidentified protozoon of M. cerebralis remains unresolved.
mesh_terms: D000818:Animals; D004848:Epithelium / Q000469:parasitology / Q000648:ultrastructure; D056890:Eukaryota / Q000648:ultrastructure*; D005393:Fish Diseases / Q000469:parasitology* / Q000473:pathology; D008938:Mitosis; D011528:Protozoan Infections / Q000469:parasitology / Q000473:pathology; D011529:Protozoan Infections, Animal; D012487:Salmonidae; D014337:Trout