Effect of demecolcine-assisted enucleation on the MPF level and cyclin B1 distribution in porcine oocytes. oleh Suo Li, Jin-Dan Kang, Jun-Xue Jin, Yu Hong, Hai-Ying Zhu, Long Jin, Qing-Shan Gao, Chang-Guo Yan, Cheng-Du Cui, Wen-Xue Li, Xi-Jun Yin