Fava CD, Basílio M de LF, Donato TM de, et al. Occurrence of seropositive sheep (Ovis aries) to Bovine Leukemia Virus in Brazil. Braz. J. Vet. Res. Anim. Sci. 2010;47(6):483-487. doi:10.11606/issn.1678-4456.bjvras.2010.26811