Department of Animal Biology and Physiology;
Faculty of Science;
University of Yaounde I;
Yaounde;
Cameroon;
Department of Animal Sciences;
Faculty of Science;
University of Douala;
Douala;
Cameroon;
Laboratory of Endocrinology and Reproduction;
Faculty of Sciences and Philosophy Alberto Cazorla Talleri;
Universidad Peruana Cayetano Heredia;
Lima;
Peru;
Implantation; Embryo; Development; Abortion; Hormone; Level;