Brian Henderson is Professor of Cell Biology at the Eastman Dental Institute, University College London and head of the Cellular Microbiology Research Group. He is the coauthor of Bacterial Disease Mechanisms (2002) and the coeditor of Bacterial Evasion of Host Immune Responses (2003). His major research interests are concerned with bacterial interactions with the host and how such interactions control inflammation and associated tissue destruction. It is through these studies that he identified that molecular chaperones are bacterial virulence factors and started his interest in the direct immunomodulatory actions of cell stress proteins. A. Graham Pockley is Professor of Immunobiology at the University of Sheffield Medical School and is head of the Immunobiology Research Unit. Professor Pockley has long-standing interests in the immunobiology of transplant rejection and his Unit is currently focussed on research relating to the biology and immunotherapeutic potential of heat shock proteins, particularly their involvement in the rejection of organ transplants and the development and progression of cardiovascular disease.