然而,制造“半人半动物”的胚胎,看起来仍是极大的伦理挑战。为了规范这类实验,不少国家制定了相应的规范,但目前各国的规范各不相同。
按照美
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%B0%FC%DA%41%BE%92%B5%E9%C5%C6%D1%A5%B3%F6%D7%E2%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
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%B0%FC%DA%41%BE%92%B5%E9%C5%C6%D1%A5%B3%F6%D7%E2%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
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