The embryo, in a blastocyst state, detaches from the zona pellucida that surrounds it and begins to look for the most suitable place to implant.
By Blanca Paraíso M.D., Ph.D., M.Sc. (gynecologist), Manuel Muñoz M.D., Ph.D. (gynecologist), Sara Salgado B.Sc., M.Sc. (embryologist), Silvia Jiménez Bravo B.Sc., Ph.D. (senior clinical embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 10/02/2019