Gomes, M. A., Costa, A. O., Tafuri, W. L., & Silva, E. F. (1993). An attemp at reversibility and increase of the virulence of axenic strains of Entamoeba histolytica . Revista Do Instituto De Medicina Tropical De São Paulo, 35(6), 503-508. https://www.revistas.usp.br/rimtsp/article/view/29096