Seminal Receptacle with Sperm (IMAGE) Technische Universität Dresden Caption False-colour image of the fluorescence lifetime of the metabolic coenzyme NADH in sperm mass (here in yellow) in a female sperm storage organ in the fruit fly. Credit Cornelia Wetzker 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.