Graphic: Fruit Fly Signal Activation (IMAGE) University of California - San Diego Caption A graphical representation of how the PPK25 channel amplifies courtship signals in fruit flies. Credit Su Lab, UC San Diego Usage Restrictions Must be used in conjunction with Neuron paper on fruit fly olfaction. 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.