Fruit Flies (image) Instituto Gulbenkian de Ciencia Share Print E-Mail Caption Tubes containing fruit flies (Drosophila melanogaster) used in this study are shown. Credit Roberto Keller (IGC). Usage Restrictions Credits should always be provided whenever using this image. Share Print E-Mail 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.