White Blood Cell Research (IMAGE) Georgia Institute of Technology Caption Using a polymer microchip, graduate student Meredith Fay and postdoctoral researcher David Myers constructed model blood vessel systems that include artificial blood vessels with diameters as narrow as the smallest capillaries in the body. The systems were used to study the activity of white blood cells affected by two different types of drugs. Credit Credit: Rob Felt, Georgia Tech 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.