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  • By Phyllis Leppert

    Reproductive scientists have studied for decades what mechanisms are involved in the decades-long dormancy of primordial oocytes.  During fetal development in a female embryo these primordial oocytes undergo meiotic arrest and remain in that state until an individual’s puberty ...

  • A scientific meeting, Basic Science of Gestation and Parturition will be held on Friday, February 17, 2023 at NIEHS in Durham, North Carolina. This all-day event is co-sponsored by The Campion Fund and The Reproductive and Developmental Biology Laboratory, NIEHS and is organized by Phyllis Leppert ...

Through research and education, the Campion Fund works to eradicate challenges to healthy reproduction to restore hope to men and women worldwide. 

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Phyllis Leppert - Introduction

Our world is a complex place full of biological diversity, and yet, sometimes it’s difficult to find reliable and science-based discussions on that topic. In our video series on gender and sex variation, scientists and experts unpack the deceptively simple concept of biological maleness and femaleness, and explain why it is an oversimplification to assume that we all fit neatly into one of two categories.


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