Electrochemical Cell (IMAGE) Johannes Gutenberg Universitaet Mainz Caption The Mainz-based chemists investigated the oxidative key step in the biosynthesis of thebaine, codeine, and morphine using a simple and self-made electrochemical cell. Credit photo/©: Alexander Lipp Usage Restrictions This image may only be used in connection with the press release "Synthesis of opium alkaloids using electric current", issued by Johannes Gutenberg University Mainz on June 28, 2018. 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.