A Neospora-like protozoon found in an aborted bovine placenta.
Portions of the placenta and kidneys from a 5-month-old bovine fetus were examined histologically. The placental cotyledonary villi were necrotic and protozoa were found in lesions. The organisms were in trophoblasts, periodic acid Schiff-negative and did not react in an immunoperoxidase test using anti-Toxoplasma gondii serum. Individual zoites were approximately 5 x 2 microns and the biggest collection was 45 x 35 microns. The organism in the present case was structurally distinct from Sarcocystis spp. and Toxoplasma gondii, but resembled Neospora caninum.
Shivaprasad
H L
HL
Department of Veterinary Pathobiology, University of Illinois, Urbana 61801.
Ely
R
R
Dubey
J P
JP
D000034:Abortion, Veterinary / Q000469:parasitology*; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D056890:Eukaryota / Q000302:isolation & purification*; D005260:Female; D010920:Placenta / Q000469:parasitology*; D011247:Pregnancy; D011528:Protozoan Infections / Q000469:parasitology; D011529:Protozoan Infections, Animal