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美国科学家日前成功利用克隆技术制造出了人类胚胎干细胞,向培育用于疾病治疗的替代组织迈进了一步,同时也可能加速克隆人类所需技术的到来。研究人员从一个患有遗传病的婴儿身上提取了皮肤细胞,将它们与捐赠的卵子融合,制造出了多个人类胚胎,这些胚胎的基因与这名8个月大的婴儿完全相同。之后,研究人员从这些胚胎上提取了干细胞。这一胚胎制造技术基本上与用于制
US scientists have successfully used cloning techniques to make human embryonic stem cells a step closer to nurturing alternative tissue for disease treatment and may also accelerate the technology needed to clone humans. Researchers extracted skin cells from a baby with genetic disease and fused them to donated eggs to create multiple human embryos whose genes are identical to the eight-month-old baby. Later, the researchers extracted stem cells from these embryos. This embryo manufacturing technology basically used in the system