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Nội dung: <blockquote data-quote="Butchi" data-source="post: 97054" data-attributes="member: 7">New Embryonic Stem Cell Lines Developed for Researchers Hướng dẫn nghe: Nhấn nút play để nghe, đoán từ điền vào chỗ trống, bôi đen chỗ trống xem đáp án.[MP3]https://server1.vnkienthuc.com/files/3/Media/kimkha02.mp3[/MP3]This is Gwen Outen with the VOA Special English Health Report. Researchers in the United States recently announced the [A]development [/A]of seventeen new lines of human embryonic stem cells. The researchers work at Harvard University for the Howard Hughes Medical Institute. They said the new [A]stem cell lines[/A] will be offered for use by other [A]scientists[/A]. Stem cells have qualities that might make them useful in the[A] treatment[/A] of diseases. Scientists are especially interested in stem cells from [A]embryos[/A]. These are able to develop into the different kinds of [A]tissues[/A] of the body. In two thousand two, President Bush restricted [A]government[/A] support for such research. Federal money can only go to [A]research[/A] on existing lines of [A]embryonic[/A] stem cells. Opponents of these limits include Ron Reagan, the son of the former [A]Republican president[/A]. He gave a speech last month at the Democratic convention in Boston. He is not a scientist, but he described how stem cells might [A]someday[/A] be used to treat a disease: Doctors would take a cell from a patient and place the nucleus inside an egg. Chemicals or electricity would cause the nucleus to divide into more cells to form an embryo. The stem cells could then be used to replace [A]unhealthy cells[/A] in the patient. Many scientists have hope for the possibility of such cures. Not all think the promise is as great as some people might believe, at least not yet. But some people [A]oppose[/A] the use of embryonic stem cells. They say human life is [A]destroyed[/A] because the embryo is destroyed to collect the cells. Private laboratories are not [A]affected[/A] by the government limits. The new stem cell lines were developed by scientists in the laboratory of Douglas Melton. He is a Howard Hughes researcher at Harvard. The institute along with the university and the Juvenile Diabetes Research Foundation pay for his research. The laboratory will use the stem cell lines to look for a cure for type one diabetes. Type one diabetes is also called juvenile diabetes. It is generally found in young people. The disease is caused by a lack of cells that produce [A]insulin[/A] in the pancreas. Douglas Melton's goal is to learn how to make [A]embryonic[/A] stem cells that can grow the needed [A]pancreatic [/A]cells. He says he hopes the new cell lines will speed this [A]research[/A] and lead to new [A]discoveries[/A] about other diseases, too. This VOA Special English Health Report was written by Paul Thompson. This is Gwen Outen.</blockquote>

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