Neospora caninum (Apicomplexa) in an aborted equine fetus.
Tachyzoites of Neospora caninum were found in sections of lung of an equine fetus aborted 2 mo before term. Individual tachyzoites were approximately 3-5 x 2-3 microns, divided by endodyogeny, and stained positively with anti-N. caninum serum but not with anti-Toxoplasma gondii serum. Toxoplasma gondii antibody was not found in the mare's serum. This is the first report of N. caninum in a horse and indicates that N. caninum can be transmitted transplacentally in equids.
Dubey
J P
JP
Livestock and Poultry Sciences Institute, Agricultural Research Service, Beltsville, Maryland 20705.
Porterfield
M L
ML
D000034:Abortion, Veterinary / Q000469:parasitology*; D000818:Animals; D056890:Eukaryota / Q000302:isolation & purification*; D005260:Female; D005315:Fetal Diseases / Q000469:parasitology / Q000662:veterinary*; D005333:Fetus / Q000469:parasitology; D006734:Horse Diseases / Q000469:parasitology*; D006736:Horses; D008168:Lung / Q000196:embryology / Q000469:parasitology; D011247:Pregnancy; D011528:Protozoan Infections / Q000469:parasitology; D011529:Protozoan Infections, Animal