Ramírez-Garcia, R., & Maldonado-Estrada, J. G. (2013). Detection of macrophages infected with Mycobacterium avium subspecies paratuberculosis in a cow with clinical stage IV of Johne’s disease. A case report. Revista Colombiana De Ciencias Pecuarias, 26(3), 219–225. https://doi.org/10.17533/udea.rccp.324832