title: Caryospora-associated dermatitis in dogs.
abstract: Numerous developmental stages of Caryospora sp. were seen in skin and lymph node of a 2-mo-old-dog with severe pyogranulomatous dermatitis. Schizonts were up to 20 microns long and contained up to 25 merozoites. Gamonts, unsporulated oocytes, sporulated oocysts, and caryocysts were seen in macrophages, connective tissue cells, and in unidentifiable host cells. Caryocysts were up to 18 microns long, and had thin walls, and contained a host cell nucleus and 1-3 sporozoites. All developmental stages of the coccidium reacted positively with anti-Caryospora bigenetica serum when examined in an immunoperoxidase test.
authors.affiliation: Livestock and Poultry Sciences Institute, U.S. Department of Agriculture, Beltsville, Maryland 20705.
authors.forename: J P
authors.initials: JP
authors.lastname: Dubey
authors.forename: S S
authors.initials: SS
authors.lastname: Black
authors.forename: L T
authors.initials: LT
authors.lastname: Sangster
authors.forename: D S
authors.initials: DS
authors.lastname: Lindsay
authors.forename: C A
authors.initials: CA
authors.lastname: Sundermann
authors.forename: M J
authors.initials: MJ
authors.lastname: Topper
mesh_terms: D000818:Animals; D003044:Coccidia / Q000302:isolation & purification*; D003048:Coccidiosis / Q000175:diagnosis / Q000469:parasitology / Q000662:veterinary*; D003872:Dermatitis / Q000175:diagnosis / Q000469:parasitology / Q000662:veterinary*; D004283:Dog Diseases / Q000175:diagnosis / Q000469:parasitology*; D004285:Dogs; D007150:Immunohistochemistry; D012876:Skin Diseases, Parasitic / Q000175:diagnosis / Q000469:parasitology / Q000662:veterinary*