Crystals Simultaneously with X-ray (IMAGE) UT Southwestern Medical Center Caption A new technique to watch proteins in action involves applying large voltage pulses to protein crystals simultaneously with X-ray pulses. At right is a close-up view of a crystal sandwiched between electrodes that deliver the voltage. Credit UT Southwestern 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.