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[News Feed] Scientists Discover Key Egg Enzyme For Blocking Sperm Entry After Fertilization [News Feed] Scientists Discover Key Egg Enzyme For Blocking Sperm Entry After Fertilization
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Old 12-16-2004, 00:00   #1 (permalink)
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Post [News Feed] Scientists Discover Key Egg Enzyme For Blocking Sperm Entry After Fertilization
Countless sperm may surround an egg at one time, yet only one must be allowed to fertilize it. In fact, an egg must undergo a rapid and complex series of changes to prevent entry by more than one sperm, called polyspermy, because it is detrimental to normal development. A study published in the December issue of Developmental Cell provides exciting information about the discovery of an enzyme that enables an egg to physically block additional sperm from entering after fertilization.

http://www.sciencedaily.com/releases...1206205951.htm
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