Diseases of swine in minas gerais brazil part 2 comparison between neutralization and fluorescent antibody tests for detecting aujeszkys diseases virus antibody De-Oliveira, A.A.; Reis, R. Arquivos da Escola de Veterinaria Universidade Federal de Minas Gerais 29(1): 121-127 1977 https://eurekamag.com/research/005/169/005169275.php