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| FeniSteadia |
 7/02/2010, 17:08
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#2195
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 Travelek  Grupa: Members Postów: 111 Dołączył: 6/02/2010, 20:07 Skąd: Pakistan Nr użytkownika: 10,686 Ulubiony kraj: FeniSteadia  |
A mechanism which starts sperm swimming when they get near the egg could one day lead to new forms of male contraception, scientists have said.
Tiny pores on the sperm's surface allow it to change its internal pH, which in turn starts its tail movements. Researchers from the University of California in San Francisco said the study might also explain why marijuana makes men infertile. A UK expert said it could have a big effect on men's fertility. Limited resources Sperm do not start swimming from the moment of ejaculation - they have only limited resources, and to stand much chance of reaching the egg, need to delay their frantic dash until they are closer to the egg. |
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| FeniSteadia |
7/02/2010, 17:19
Post
#2198
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Travelek Grupa: Members Postów: 111 Dołączył: 6/02/2010, 20:07 Skąd: Pakistan Nr użytkownika: 10,686 Ulubiony kraj: FeniSteadia |
A mechanism which starts sperm swimming when they get near the egg could one day lead to new forms of male contraception, scientists have said.
Tiny pores on the sperm's surface allow it to change its internal pH, which in turn starts its tail movements. Researchers from the University of California in San Francisco said the study might also explain why marijuana makes men infertile. A UK expert said it could have a big effect on men's fertility. Limited resources Sperm do not start swimming from the moment of ejaculation - they have only limited resources, and to stand much chance of reaching the egg, need to delay their frantic dash until they are closer to the egg. |
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