The zona pellucida (ZP) is a protein-rich element responsible for maintaining the egg and the embryo with a spherical shape. During fertilisation, spermatozoa have to gradually pass through the ZP until a single spermatozoon reaches the egg cell membrane.
Read the full article on: What Does Assisted Hatching (AHA) Mean in IVF? ( 30).
By Laura Garrido B.Sc., M.Sc. (embryologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Miguel Angel Checa Vizcaino M.D., Ph.D. (gynecologist), Patricia Recuerda Tomás B.Sc., M.Sc. (embryologist), Rut Gómez de Segura M.D. (gynecologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 12/04/2018
