Researchers (IMAGE) Walter and Eliza Hall Institute Caption Dr Andrey Kan, Ms Julia Marchingo, Dr Susanne Heinzel and Professor Phil Hodgkin have combined mathematics and laboratory studies to define how the size of the immune response is controlled. Credit Walter and Eliza Hall Institute, Australia Usage Restrictions Please credit Walter and Eliza Hall Institute, Australia 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.