@CNN: A 71-year-old woman who feels no pain could help scientists develop new painkillers https://t.co/1LSQYdIVix https://t.co/TRWkxYoPlJ

@CNN: A 71-year-old woman who feels no pain could help scientists develop new painkillers https://t.co/1LSQYdIVix https://t.co/TRWkxYoPlJ