With precious human eggs too few and far between, Cibelli spent his time between deliveries practicing the transfer of nuclear DNA from a half-dozen or so body cell donors into cow eggs just to perfect his technique.
With precious human eggs too few and far between, Cibelli spent his time between deliveries practicing the transfer of nuclear DNA from a half-dozen or so body cell donors into cow eggs just to perfect his technique.
由于人类卵子娇贵而稀少，奇贝利通过将几个人体细胞捐赠者的细胞核DNA注入牛的卵子中来磨练技巧。