3BrPA (red) (IMAGE) Johns Hopkins Medicine Caption 3BrPA (red) is illustrated encased in a sugar-based microshell. Credit Jean-Francois Geschwind, Johns Hopkins Usage Restrictions Must credit Johns Hopkins Medicine 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.