Metcalf, James new Orbitrap 2021 (IMAGE) Brain Chemistry Labs Caption Brain Chemistry Labs Researcher Dr. James Metcalf uses Orbital Trap Mass Spectrometry to sequence antiglioblastoma peptide from violets. Credit copyright Paul Alan Cox Usage Restrictions None License Original 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.