Pope Francis shakes hands with US vice president Joe Biden as he takes part at a congress on the progress of regenerative medicine and its cultural impact, being held in the Pope Paul VI hall at the Vatican, Friday, April 29, 2016.
Pope Francis shakes hands with US vice president Joe Biden as he takes part at a congress on the progress of regenerative medicine and its cultural impact, being held in the Pope Paul VI hall at the Vatican, Friday, April 29, 2016. Andrew Medichini AP
Pope Francis shakes hands with US vice president Joe Biden as he takes part at a congress on the progress of regenerative medicine and its cultural impact, being held in the Pope Paul VI hall at the Vatican, Friday, April 29, 2016. Andrew Medichini AP