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SSS 2009-12-10

Little girls are made of sugar and spice and, according to a study published in the journal Cell, a fierce determination to maintain their girlishness. Because it seems that a single gene keeps their ovaries from turning into testes. Scientists have

发表于:2018-12-24 / 阅读(43) / 评论(0)

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For in nature it takes thirty years for two hundred eggs to reach maturity. 因为在自然状态下，要让两百个卵子成熟需要三十年之久。 But our business is to stabilize the population at this moment, here and now. 但我们现在的任

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60秒科学:Gene Stops Ovaries from Testifying

Gene Stops Ovaries from Testifying A mouse study in the journal Cell finds that a gene in females must remain active throughout her life to keep her ovaries from turning into testes. Karen Hopkin reports Little girls are made of sugar and spice and,

发表于:2019-01-30 / 阅读(154) / 评论(0)

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Why I shouldn't meet others with cystic fibrosis FRI 29 SEP 2017 Charles, 22, sings about life with the condition

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accrued cumulative dividends

afuu

airing system of life boat

carbon dioxide absorption cartridge