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Like all stem cells, pluripotent stem cells are also able to self-renew, meaning they can perpetually create more copies of themselves. There are several types of pluripotent stem cells, including embryonic stem cells. But all of them are able to differentiate, or mature, into the three primary groups of cells that form a human being: Scientists are just beginning to understand the subtle differences between the different kinds of pluripotent stem cells, and studying all of them offers the greatest chance of success in using them to help patients. Induced pluripotent cells iPS cells:

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