© 2021 MJH Life Sciences and Contemporary OB/GYN. All rights reserved.
© 2021 MJH Life Sciences™ and Contemporary OB/GYN. All rights reserved.
February 03, 2007
When a blastocyst expands with the growth of the blastocoel, it stretches and thins the zona pellucida (ZP), ultimately rupturing the ZP allowing the embryo to hatch free ready for implantation.