Fertilization is a very basic cell interaction, a very...

Fertilization is a very basic cell interaction, a very important medical, economic and social interaction. And it's also a paradigm of how other cells interact, because every cell in our body is near or in close contact with other cells. And when those interactions break down you can get cancer and other diseases. So identifying these molecules could give us a better idea of the lock and key necessary for everyday functioning, not only in terms of preventing infertility but also for preventing disease.