title: Shedding of the immunodominant P20 surface antigen of Eimeria bovis sporozoites.
abstract: P20 is an immunodominant surface antigen of Eimeria bovis sporozoites. As parasites underwent merogony within cultured bovine monocytes and Madin-Darby bovine kidney (MDBK) cells, P20 appeared to be shed gradually by meronts and was absent in type 1 and 2 first-generation merozoites. Meronts of E. bovis appeared to shed P20 into the parasitophorous vacuole of bovine monocytes, whereas MDBK cells evidently released P20 into the culture medium or destroyed its antigenic determinant.
authors.affiliation: Veterinary Research Laboratory, Montana State University, Bozeman 59717.
authors.forename: C A
authors.initials: CA
authors.lastname: Speer
authors.forename: W M
authors.initials: WM
authors.lastname: Whitmire
mesh_terms: D000818:Animals; D000953:Antigens, Protozoan / Q000276:immunology*; D000954:Antigens, Surface / Q000276:immunology*; D004539:Eimeria / Q000254:growth & development / Q000276:immunology*; D005455:Fluorescent Antibody Technique
chemical_list: D000953:Antigens, Protozoan; D000954:Antigens, Surface