John Tyson, Virginia Tech (image) Virginia Tech Caption "We have to first understand the molecular basis of normal cell behavior; then we have a chance of figuring out how the system is broken in diseased cells," said Tyson. Credit Virginia Tech Photo Usage Restrictions The photo of John Tyson may be used when discussing his research. 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.