How to rewind the clock on arthritic cartilage: A new study describes how a key protein, called Signal Transducer and Activator of Transcription 3 (STAT3), might turn back the clock on aging cartilage that leads to osteoarthritis. stemcell.keck.usc.edu Submitted by lolfuys t3_10d3qil on January 16, 2023 at 3:25 AM in science 20 comments 897