Nobel Prize in Medicine Karl Deisseroth (USA), Peter Hegemann (GER) and Georg Nagel (GER) share the prize for the development of techniques for controlling genes with light, known as optogenetics 117 235 Medicine prizes since 1901 Medicine laureates Source: NobelPrize.org Pictures: Newscom, Cmichel67, University of Regensburg, Millencolin © GRAPHIC NEWS