Interacting sperm and egg
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=ahCxdskzriw
http://www.nature.com/news/scientists... • Scientists have identified a long-sought fertility protein that allows sperm to dock to the surface of an egg. The finding, an important step in understanding the process that enables conception, could eventually spawn new forms of birth control and treatments for infertility.
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