Beewolf Egg, Fluorescent Dye (IMAGE) Max Planck Institute for Chemical Ecology Caption This is a bee with a beewolf egg. The release of nitric oxide has been made visible as bright spots by using a fluorescent dye. Credit Erhard Strohm Usage Restrictions For exclusive use in reporting this press release. 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.