After 3 days in culture, the embryo should have 8 cells (blastomeres) of similar size. Otherwise its development could be slower or faster, which suggests that the embryo does not evolve properly.
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: 10/16/2019
