Discovering the step-by-step details of the path embryonic cells take to develop into their final tissue type is the clinical goal of many stem cell biologists. To that end, Kenneth S. Zaret, PhD, professor of Cell and Developmental Biology at the Perelman School of Medicine at the University of Pennsylvania, and associate director of the Penn Institute for Regenerative Medicine, and Cheng-Ran Xu, PhD, a postdoctoral researcher in the Zaret laboratory, looked at immature cells called progenitors and found a way to potentially predict their fate. They base this on how histones are marked by other proteins. Read about this research in the May 20, 2011 issue of SCIENCE.
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