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Have you ever imagined that you could be cloned(克隆) like Dolly the sheep, in the not too distant future?

The news that a human embryo(胚胎) has been cloned for the first time has caused mixed reactions(反应)．

The was carried out by scientists from the Advanced Cell Technology Inc (ACT), in Massachusetts, US. The group the news known on November 25.

This is human being. A clone is alive, it walks, it breathes, said Jamie Griffon, a(n) on the study of cloning at New York University School of Medicine.

“This is a set of cells in a lab that will be used to __life.”

Such research could lead to treatment for such as heart disease, AIDS and even cancer, scientists.

Despite high hopes from other scientists, the news raised concerns immediately from religious and political leaders. Several in the US do not allow human cloning. Former President George W. Bush also made it clear that he is any type of human cloning. However, the scientists at ACT said they have no interest at present in an early embryo into Animals have been cloned repeatedly since Dolly, the sheep in 1997. And there were no real technical to stand in the way of scientists making a cloned human embryo.

This time the research group used traditional cloning technology with a human it was given DNA from an adult cell, the egg began to it was