Fruit Fly Nerve Function (IMAGE) King's College London Caption Image shows the larval stage of the fruit fly Drosophila. The nerve cells in this larva are genetically engineered to produce a green fluorescent protein (GFP), which helped researchers from King's College London see the nerves that had damaged mitochondria. By analysing nerves with damaged mitochondria in larvae and adult flies, they discovered that mitochondria produced a signal which blocked nerve function. Credit King's College London Usage Restrictions None 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.