How a 'repair economy' creates a better community

John switches on the power saw he's bought secondhand on eBay. The machine "arcs—shooting out a visible electric charge. So he takes it apart to investigate. He identifies the problem: the field coil, a current-carrying ...

A new mechanism for accessing damaged DNA

UV light damages the DNA of skin cells, which can lead to skin cancer. But this process is counteracted by DNA repair machinery, acting as a molecular sunscreen. It has been unclear, however, how repair proteins work on DNA ...

Researchers create most complete model of complex protein machinery

Environmental conditions, lifestyle choices, chemical exposure, and foodborne and airborne pathogens are among the external factors that can cause disease. In contrast, internal genetic factors can be responsible for the ...

Messenger cells bring good news for bone healing, study finds

How do bones heal, and how could they heal better? The answer to these questions may lie in a newly discovered population of "messenger" cells, according to a recent USC Stem Cell study published in the journal eLife.

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