PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, perspectives, reviews, colloquium papers, and actions of the Academy. In ...

Intestinal stem cells rejuvenate daily so bowels will stay healthy and function normally, but a new study in Cell Reports suggests they also age along with people and lose their regenerative capacity.

Researchers at the University of Helsinki and the Beatson Institute for Cancer Research in Glasgow have discovered how mutated cells promote their chances to form cancer. Typically, the accumulation ...