Cedars-Sinai Medical Center

Stories

Scientists find protein that lets 'zombie cells' hide from immune system

Lead institution for the PD-L2 study

A protein called PD-L2 helps aging "zombie cells" hide from the immune system, scientists at Cedars-Sinai reported. Blocking the protein in mice let the immune system clear these cells, reduced inflammation, and improved blood sugar regulation and grip strength.

Updated Oct 14

The long road to spinal cord repair

New Capabilities

As of May 2026: Leading institution in current CCN1 research

For decades, doctors told paralyzed patients that severed spinal cords cannot heal. That dogma is crumbling.

Updated May 29