The generations of the vaccines: Case of gastrointestinal antiparasitic vaccines used in Veterinary Medicine . Revista Sistemas de Producción Agroecológicos, [S. l.], v. 12, n. 2, p. 74–96, 2021. DOI: 10.22579/22484817.879. Disponível em: https://ojs-unillanos-prueba.metarevistas.org/index.php/sistemasagroecologicos/article/view/879. Acesso em: 14 sep. 2026.