http://www.sciencedaily.com/releases/2010/05/100525171310.htm
In the article, Study Sheds Light Into the Nature of Embryonic Stem Cells, it talks about a study at the University of Edinburgh that proved that embryonic stem cells have cells inside of them that can change what they can become. It is said that that discovery can help scientists catch the stem cells at just the right time when they are changing. That could widen the field of what they can become. Embryonic stem cells used to be though of as single-celled, but that was disproven through this experiment. Now they know that they are made up of different cell types that can change into other cells. Scientists also found out that embryonic stem cells can turn into cells that have to do with the placenta. This discovery was said to have helped improve scientists' abilities to make specific cells in the lab.
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