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    • 81. 发明申请
    • SELECTION AND CLONING METHODS
    • 选择和克隆方法
    • WO02009510A2
    • 2002-02-07
    • PCT/US2001/041561
    • 2001-08-01
    • A01K67/027C12N15/85C12N15/873
    • C12N15/873A01K67/0273A01K2217/05A01K2217/20A01K2227/101A01K2267/02C12N15/8509
    • Selection and cloning methods are disclosed that are effective for the selective multiplication of desired animals, for instance livestock animals. These methods can be used to expand populations of animals, and are particularly useful for duplicating animals selected based on traits that are measured after the animal is deceased. Certain embodiments include techniques useful for selecting a desirable bovine animal (e.g., desirable steer) based at least in part on a measurable carcass trait. Also described are specific cloning techniques that involve repetitive (for instance, two) cycles of cloning, such as nuclear transfer cloning. In specific embodiments, a two-step cloning system is described, in which the nuclear donor of the first cloning cycle is an adult fibroblast cell and the nuclear donor of the second cloning cycle is a fetal fibroblast harvested from a fetus that arose from the fist cloning cycle.
    • 公开了选择和克隆方法,其对于所需动物例如牲畜的选择性增殖是有效的。 这些方法可用于扩大动物群体,并且特别可用于基于在动物死亡后测量的性状选择的重复动物。 某些实施方案包括至少部分地基于可测量的胴体特征来选择期望的牛动物(例如期望的转向)的技术。 还描述了涉及克隆的重复(例如,两个)循环的特异性克隆技术,例如核转移克隆。 在具体实施方案中,描述了两步克隆系统,其中第一克隆周期的核供体是成体成纤维细胞,第二克隆周期的核供体是从第一次产生的胎儿收获的胎儿成纤维细胞 克隆周期。