Cleaved Surfactant (IMAGE) University of Wisconsin-Madison Caption A chemical surfactant or detergent used to help prepare protein samples for analysis by mass spectrometry, is cleaved in this illustration by ultraviolet light. Breaking the molecule eliminates it from samples, leaving only the subject proteins for analysis. Credit Artwork designed for this paper by graduate student Stanford Mitchell 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.