Information Magazine about Adoption, Complex Cases of Fertility & Surrogacy
Blastocyst stage

Blastocyst stage

In the blatocyte stage, day 5-6 of embryonic development, the embryo has an internal cell mass, the trophoectoderm and a liquid cavity called a blastocele. At this stage of development, the embryo expands. Normally, this occurs 5-6 days after fertilization, but sometimes it happens early.

By (embryologist), (embryologist) and (babygest staff).
Last Update: 12/31/2020
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