Fruit flies (IMAGE) Linköping University Caption The researchers at Linköping University used fruit flies to study mutations that could contribute to ageing. Credit Photo: Magnus Johansson/Linköping University Usage Restrictions Please use appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.