University of Pennsylvania

Researchers identify natural tumor suppressor

Researchers from the University of Pennsylvania School of Medicine have identified a key step in the formation – and suppression – of esophageal cancers and perhaps carcinomas of the breast, head, and neck. By studying ...

Sep 09, 2008
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Evolution can select for evolvability, biologists find

Evolution does not operate with a goal in mind; it does not have foresight. But organisms that have a greater capacity to evolve may fare better in rapidly changing environments. This raises the question: does evolution favor ...

Nov 14, 2013
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Researchers Unlock Molecular Origin of Blood Stem Cells

(PhysOrg.com) -- A research team led by Nancy Speck, PhD, Professor of Cell and Developmental Biology at the University of Pennsylvania School of Medicine, has identified the location and developmental timeline ...

Jan 09, 2009
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