Class Field Work (image) University of Washington Share Print E-Mail Caption Students in the Ecology of Infectious Marine Diseases course working in the field. Credit Allison Tracy, Cornell University Usage Restrictions Photo credit required. 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.