"I think it's incredibly exciting," says Dr. Susan Fisher, a stem cell scientist and a professor of obstetrics, gynecology and reproductive science at University of California SAN Francisco.

“我想这是令人难以置信的，”加利福尼亚大学妇产和生殖学教授、干细胞科学家Susan Fisher博士说。

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Using stem cell technology, reproductive scientists in Texas, led by Dr. Richard r. Berhringer at the M.D. Anderson Cancer Center, have produced male and female mice from two fathers.

使用干细胞技术，由richard r . Berhringer博士带领的德克萨斯州M.D.A nderson肿瘤中心的生殖科学家们利用两只公鼠成功繁殖出雌性和雄性老鼠后代。

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The Vatican has over recent decades issued blanket condemnations of artificial methods of birth control, in-vitro fertilization, therapeutic and reproductive cloning, and human embryonic stem cell research.

FORBES: Venter and the Vatican

But Josephine Quintavalle, director of Comment on Reproductive Ethics (Core), which opposes embryonic stem cell therapies, dismissed the research as "highly speculative".

BBC: Green light for US stem cell work

So the controversy over government funding of embryonic stem cell research quickly reaches into the unregulated domain of reproductive medicine.

CNN: graphic