The morula is the blackberry-shaped embryonic structure that forms at 4 days of the embryo's development and precedes the blastocyst. The cells must be compacted in order to continue their development properly.
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) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 03/23/2022