Two small clinical trials revive hope for an old idea: Cells injected into the brain might replace the nerve cells that die in Parkinson’s disease. The studies, published April 16 in Nature, represent ...

Researchers have used an experimental mRNA therapy to make old immune cells in mice behave as if they were young again, reversing key signs of immune aging in a way that standard vaccines or drugs ...

Inside every living cell, tiny molecular machines are constantly in motion, shifting shapes, tugging on membranes and shuttling ions from one side to the other. That restless activity does more than ...

When we developed the ability to convert various cells into a stem cell, it held the promise of an entirely new type of therapy. Rather than getting the body to try to fix itself with its cells or ...