PRESIDENT GEORGE W. BUSH Message Board

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Politics : PRESIDENT GEORGE W. BUSH

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To: Kenneth E. Phillipps who wrote (682904)	5/20/2005 6:27:10 PM
From: Hope Praytochange	Read Replies (1) of 769667

A cloned embryo is made from a single cell -- often a skin cell -- taken from the person or animal to be cloned, which is then fused to an egg from a donor. In the latest experiments, the team started with 185 eggs donated by 18 women. The women underwent a month-long series of hormone shots followed by the extraction of about a dozen ripened eggs from their ovaries. None of the women was paid. washingtonpost.com Virtually all other human embryonic stem cell lines to date have been grown for at least a while on mouse cells, which secrete a cocktail of hormones that support the growth of finicky stem cells. By growing the stem cells on a bed of human support cells instead of mouse cells, the team does not have to worry that animal viruses or other contaminants may prevent transplantation of the stem cells, or tissue grown from them, into patients -- the ultimate goal.

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