المصدر: D.S. Zanoni1,*, F. Grandi1,2, D.Q. Cagnini1, S.M.G. Bosco3 and N.S. Rocha1,2 1Laboratory of Investigative and Comparative Pathology, School of Veterinary Medicine and Animal Science, Univ. Estadual Paulista – UNESP. Botucatu, Brazil 2Department of Pathology, Botucatu Medical School, Univ. Estadual Paulista – UNESP. Botucatu, Brazil 3Department of Microbiology and Immunology, Biosciences Institute, Univ. Estadual Paulista – UNEP, Botucatu, Brazil