Andrew DeWoody and Cornell Surgeons (IMAGE) Purdue University Caption Andrew DeWoody, at left, works with Cornell surgeons to collect lake sturgeon gonad biopsies. During the study, DeWoody and postdoctoral associate Matthew C. Hale found evidence of trematode genes in the sturgeon genome and of a protozoan parasite that causes a sexually transmitted disease in humans. Credit Purdue University photo/Anna Fahey 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.