Stem cells have been an important window into the future of medicine. One of the main problems with using stem cells to treat a problem area of disease is the issue with mutations caused by bad genes. In the recent article of Nature, scientists have shown proof of concept that they can not only to make the stem cells reproduce, but that they can also edit the bad gene material out of the stem cells.

After they fixed the genetic issues with the stem cells, they were able to induce them into growing liver cells. The team of scientists then transplanted them into the mice with liver disorders. Within about 6 weeks, the stem cells took over and fixed the liver issue. The liver function was properly restored. 

Source: http://www.nature.com/nature/journal/vaop/ncurrent/full/nature10424.html

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