The blastocyst is the embryonic stage needed for implantation to occur. At this moment the embryo has an internal cavity, the blastocele, an internal cellular mass, which will originate the organs of the future baby, and the trophoblast, which is the structure of cells that will give rise to the placenta.
Read the full article on: How are embryos classified according to their day of development? ( 63).
By Alicia Francos Pérez M.D., M.Sc. (gynecologist), José Luis de Pablo B.Sc., M.Sc., Ph.D. (senior clinical embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist), Cristina Algarra Goosman B.Sc., M.Sc. (psychologist) and Michelle Lorraine Embleton B.Sc. Ph.D. (biochemist).
Last Update: 09/05/2022