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출처 : Technologyreview

Next Steps for Stem Cells

Searching the brain of an Alzheimer’s patient for clues into the origin of the disease is like trying to find the cause of a plane crash in the wrecked aftermath. However, a recent breakthrough in stem-cell research could generate new cellular models that allow scientists to study disease with unprecedented accuracy, from its earliest inception to a cell’s final biochemical demise.

Last November, two groups of scientists announced that they had independently achieved one of the stem-cell field’s biggest goals: the ability to reprogram adult cells into embryonic-like stem cells without the need for human embryos. (See “Stem Cells without the Embryos.”) The findings garnered extensive media attention, largely because the new method obviated the need for human embryos, a major ethical minefield that has stymied research.

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