Stock Photo - Nuclear physicist Andree Welker, photographed at the experiment hall of the so-called Isolde experiment at the European Organization for Nuclear Research 'CERN' in Meyrin, Switzerland, 21 December 2016. Photo: Aleksandra Bakmaz/dpa | usage worldwide. - Meyrin/Switzerland

Stock Photo: Nuclear physicist Andree Welker, photographed at the experiment hall of the so-called Isolde experiment at the European Organization for Nuclear Research 'CERN'.

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