Vidotto, O.; Kano, F. S.; Freire, R. L.; Mitsuka, R.; Ogawa, L.; Bonesi, G.; Navarro, I. T.; Franciscon, F. S. G. Occurrence of Antibodies Anti-Toxoplasma Gondii in Equine from Four States (SP, PR, MS and MT) Killed in Apucarana City, Paraná State, Brazil. Semina: Ciênc. Agrár. 1997, 18, 9-13.