One of the most famous uses for HeLa cells came when Jonas Salk used these cells to test his vaccine, which now protects a lot of people against polio. Some of the more recent uses for HeLa cells are a Human papillomavirus vaccine made by Harold zur Hausen. This vaccine won him a Nobel Prize in 2008. Another use for HeLa cells is telomerase research, which won Elizabeth Blackburn a 2009 Nobel Prize. HeLa cells have also been used for the development of new chemotherapy techniques and to test how and where nuclear radiation mutates cells. 