title: Sarcocystis infections in mule deer (Odocoileus hemionus) in Montana and the descriptions of three new species.
abstract: Four structural types of sarcocysts of Sarcocystis were found in skeletal muscles of mule deer in Montana. Type I sarcocysts were thin walled (1 to 3 micron) and belonged to S hemionilatrantis. Types II to IV sarcocysts were thick walled (2 to 10 microns) and new names were proposed for them. Type II sarcocysts with long villar projections were named S hemioni. Type III sarcocysts with club-shaped villi of uneven thickness were named S youngi. Type IV sarcocysts with walls of uneven thickness and containing hair-like protrusions were named S americana.
mesh_terms: D000818:Animals; D003670:Deer / Q000469:parasitology*; D005260:Female; D008297:Male; D009009:Montana; D009132:Muscles / Q000469:parasitology* / Q000473:pathology; D012523:Sarcocystosis / Q000473:pathology / Q000662:veterinary*