Nobel Prize in Medicine -------------------------- William G. Kaelin Jr (USA, right), Sir Peter J. Ratcliffe (UK, centre) and Gregg L. Semenza (USA, left) jointly share the Nobel Prize for their discoveries of how cells respond to varying oxygen levels in the body -------------------------- 109 Nobel Prizes in Medicine awarded from 1901 to 2017 -------------------------- 32 Age of youngest laureate, Frederick G. Banting, awarded in 1923 for discovery of insulin -------------------------- 12 Women awarded Medicine Prize to date -------------------------- 87 Age of oldest laureate, Peyton Rous, awarded in 1966 for discovery of tumour-inducing viruses -------------------------- Source: Nobelprize.org Pictures: Getty Images © GRAPHIC NEWS