Interespecies effect of sequential human medium use in the production of blastocysts of female ovis canadensis mexicana by interspecies handmade cloning Authors: Vazquez-Avendaño, José Roberto, Hernández-Martínez, Sarahí, Hernández-Pichardo, José Ernesto, Rivera-Rebolledo, Juan Arturo, Ambriz-García, Demetrio Alonso, Navarro-Maldonado, María del Carmen