The blastocyst corresponds to the embryo on day 5-6 of development.
At this time, the embryo shows an internal cell mass that will generate the organs of the future baby. In addition, the trophectoderm that gives rise to the placenta develops.
Read the full article on: Classification criteria and categories according to the embryo quality ( 77).
By Andrea Rodrigo (embryologist), Marta Barranquero Gómez (embryologist) and Marie Tusseau (babygest staff).
Last Update: 06/26/2019
