An embryo on day 3 of development consists of 8 symmetrical cells. This embryo will continue to divide and on day 4 will reach the morula stage. At this point, counting the number of cells is quite complicated.
From this moment on, and on day 5 of development, the embryo will be called a blastocyst.
Read the full article on: What’s the Difference Between Zygote, Embryo & Fetus? ( 49).
By Aitziber Domingo Bilbao B.Sc., M.Sc. (embryologist), Andrea Rodrigo B.Sc., M.Sc. (embryologist), Eric Saucedo de la Llata M.D. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist) and Zaira Salvador B.Sc., M.Sc. (embryologist).
Last Update: 06/05/2024
