求助文献：Growth differentiation factor-9 is required during early ovarian

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- R: P" {3 ^' |7 ~求助文献一篇：, m- F1 y7 B3 s* T
    title： Growth differentiation factor-9 is required during early ovarian folliculogenesis。+ F" `7 U- r: D; h6 x4 F2 N
             Nature 383, 531-535 (10 October 1996) , |4 a6 B* ^# `% [$ H

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