The zona pellucida (ZP), also known as the pellucid layer, consists of the translucent membrane that surrounds the egg. Only a sperm will be able to pass through this layer to fertilize the egg and result in pregnancy.
Another function of the pellucid layer of the oocyte is to control the first divisions that occur in the embryo. This layer is present in the embryo until it reaches the blastocyst stage, that is, until it is at day 5 of development.

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Author
Graduated in Psychology by the University of Valencia (UV) and specialized in Clinical Psychology by the European University Center and specific training in Infertility: Legal, Medical and Psychosocial Aspects by University of Valencia (UV) and ADEIT.
More information about Cristina Algarra Goosman
More information about Cristina Algarra Goosman
Member number: CV16874
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