Ken Stark in the Lab (IMAGE) University of Waterloo Caption Professor Ken Stark taking a sample of blood in Waterloo's Laboratory of Nutritional and Nutraceutical Research to determine the levels of omega-3 fatty acids. Credit Light Imaging 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.