1997, Number 4
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ABSTRACTIn the following report, a case of aborted bovine fetus associated to neosporosis is described. This case was submitted for examination to the Pathology Department in the Faculty of Veterinary Medicine and Zootechnics of the National Autonomous University of Mexico in Mexico City. The case corresponded to a male, Holstein bovine fetus, with a 5 month gestation. Microscopically, non suppurative encephalitis with multiple foci of necrosis and gliosis were found. In addition, an oval protozoal tissue cyst of 21 x 22 mm was detected. Deparaffinized sections were examined immunohistochemically, and groups of extracellular tachizoites were observed associated with the areas of gliosis. Discreet non suppurative hepatitis and myocarditis were found in this fetus as well. It is believed that this is the first case described in Mexico of bovine abortion related to characteristic lesions and the presence of protozoal structures related to Neospora sp. However, it is necessary to perform more extensive, conclusive anatomopathological and immunological studies to be able to determine the prevalence and significance of bovine abortion associated to neosporosis in Mexico.
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