Examlex
An advanced directive is best defined as
Secondary Oocyte
An oocyte in the second meiotic division phase, ready to be fertilized to potentially develop into an embryo.
Primary Spermatocyte
A male germ cell that undergoes meiosis to form spermatozoa, in the process of spermatogenesis.
Sertoli Cell
A type of somatic cell found within the seminiferous tubules of the testis that supports and nourishes developing sperm cells.
Zona Pellucida
The zona pellucida is a glycoprotein layer surrounding the plasma membrane of an oocyte or early-stage embryo, playing a crucial role in fertilization and preventing polyspermy.
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