聽寫填空,只寫填空內(nèi)容,不抄全文,3-5個(gè)句子,不用寫標(biāo)號(hào),注意標(biāo)點(diǎn)~

Martin Dym: The adult stem cells, for example in the skin, they produce skin cells. [---1---]

You're listening to Martin Dym who conducts research on adult stem cells at Georgetown University. He said modified adult cells – called induced pluripotent stem cells, or IPS cells – might become an effective alternative to stem cells taken from human embryos.

Martin Dym: [---2---]

But the use of embryonic stems cells raises ethical questions. [---3---]

Martin Dym: So, for example, you can take a skin cell from an adult, put in some genes, and it becomes a pluripotent embryonic stem cell – almost identical to the real embryonic stem cell.

A possible issue: [---4---] [---5---]

I’m Deborah Byrd, E&S, a clear voice for science.

【視聽版科學(xué)小組榮譽(yù)出品】
Whereas an embryonic stem cell is capable of producing almost all cells in the body. The embryonic stem cell, since it can give rise to almost any cell type in the body, can be used to cure, theoretically, most disease of the body. Dym said scientists create the new kind of cell, the IPS cell, by adding certain genes to an adult cell. The genes used to transform the adult stem cells may cause cancer in the cells. That's one reason IPS cells may be five to ten years away from use in clinical trials.