Scott Egan, Rice University (image) Rice University Share Print E-Mail Caption Rice University evolutionary biologist Scott Egan inspects galls on the stem of live oak tree at Rice. Credit Brandon Martin/Rice University Usage Restrictions For news reporting purposes only. 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.