How the MasSpec Pen Works (video) University of Texas at Austin Share Print E-Mail Loading video... Caption This one-minute video demonstrates how the MasSpec Pen could be used during surgery to identify cancerous tissue in real-time. Credit Vivian Abagiu/Univ. of Texas at Austin Usage Restrictions None Share Print E-Mail 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.