近日，科研人员首次利用供体动物的胸腔为培养环境，使细胞生长成一个具有完整功能的肺。
For the first time, researchers have built a functioning lung by growing cells on the skeleton of a donor lung.
多年的经验表明，由于绵羊的活力和吃苦耐劳且具有超级免疫系统和天然抗疾病能力，它们被作为最佳的动物供体。
Many years of experience have shown that sheep are the best donor animals because they are vital, hardy animals with supererior immune systems and natural disease resistance.
按照供体细胞的不同，哺乳动物核移植研究可分为两种：胚胎细胞核移植和体细胞核移植。
According to the different donor types, mammalian nuclear transfer can be divided into two kinds: embryonic nuclear transfer and somatic nuclear transfer.
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