求翻译

qingtinglueshui

1.能帮我翻译这句话嘛？mir-302 Controls Mesoderm and Endoderm Specification in hESCs
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2.还有 miR-302-lefty axis sustains pluripotency marker expression and impairs germ layer specification in differentiating hESC这句话怎么翻译啊？对specification不能正确理解，导致我不能理解很多内容 6 o  V2 @" q6 i$ n
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