Dr. Michael Roth (IMAGE) UT Southwestern Medical Center Caption Researchers led by Dr. Michael Roth, professor of biochemistry, and including assistant Iryna Zubovych have discovered a mechanism in worms by which cancer cells become resistant to a specific class of drugs. Credit UT Southwestern Medical Center Usage Restrictions Please use credit line 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.