求助文献3篇，谢谢

fantafiction

Recent advances on in vitro culture and cloning of ungulate embryos.8 j! O4 Q& V& K: I% C& e* X
Campbell, K., and Wilmut, I. (1994).! c( [/ q3 d9 ?, i' Q& M1 y

& H; K# Q3 t& N) |Improved development to blastocyst of ovine nuclear transfer embryos reconstructed during the presumptive S-phase of enucleated activated oocytes
+ x/ B3 F7 p+ vCampbell, K.H., Loi, P., Cappai, P., and Wilmut, I. (1994)' D! [$ k; m$ V

# {" y8 ~  i/ W" JFate of chromatin in nuclear transfer embryos reconstructed using unactivated oocytes as cytoplast recipients1 q5 E8 B# {  n9 t3 g+ }" k
Campbell, K.H.S, Ritchie, W.A., and Wilmut, I. (1994)# D8 `- n, X' ?3 V2 H" a

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第2 个。。