A Chip to Measure Immunity (IMAGE) University of California - Davis Caption Researchers at UC Davis and Johns Hopkins Bloomberg School of Public Health plan to develop a microfluidic device that can measure the ability of white blood cells raised against one flu virus variant to bind to a new variant. As cells pass through channels lined with flu virus, cells that recognize the virus will stick to the channels until pulled off by increasing shear forces. Credit Steven George/UC Davis Usage Restrictions May be used with acknowledgement. License Original 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.