Parasitic Worm in a Petry Dish (IMAGE) Iowa State University Caption Researchers used video tracking to monitor parasitic worms exposed to diethylcarbamazine in a laboratory setting. Credit Richard Martin 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.