A new kind of stem cells, which donâ??t involve the destruction of embryos, canâ??t turn into brain cells as well as embryonic stem cells can, a UW-Madison study found. Induced pluripotent stem cells, discovered in 2007 in part by campus scientists James Thomson and Junying Yu, can morph into several types of brain cells. But they donâ??t do so as consistently or efficiently as embryonic stem cells, which Thomson was the first to create, in 1998.
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