Too Much Auxin May Cause Tumorous Behavior (video) Institute of Science and Technology Austria Share Print E-Mail Loading video... Caption The scientists used live microscopy to track the thale cress root while healing. When they interfered with the auxin amount, either no cells or too many cells responded to the wound, sometimes leading to tumorous swelling of the root. Credit Lukas Hoermayer / IST Austria Usage Restrictions Lukas Hoermayer / IST Austria 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.