Embryo at blastocyst stage.
This is how an embryo looks like five days after egg fertilisation by sperm.
The inner cell mass (ICM) can be seen clearly. On later days, it will break down the membrane protecting it and become attached to the endometrium in the woman's uterine cavity. This is known as "hatching".
This embryo is a good candidate to be transferred to the maternal uterus by means of embryo transfer.
Read the full article on: Embryo culture in the in vitro fertilization laboratory (IVF) ( 43).
By Aurea García Segovia B.Sc., M.Sc. (embryologist), Carmen Ochoa Marieta M.D., Ph.D., M.Sc. (gynecologist), Cristina Duque Royo M.Sc., Ph.D. (senior clinical embryologist), María de Las Heras Martínez B.Sc., M.Sc. (clinical embryologist), Marina González Tejedor M. D. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Rebeca Reus BSc, MSc (embryologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 10/29/2018
