Laureate Professor Peter Doherty AC shared the Nobel Prize in Physiology or Medicine in 1996 with Rolf Zinkernagel for their discovery of how the immune system recognises virus-infected cells. He was Australian of the Year in 1997. Professor Doherty is now patron of the Peter Doherty Institute for Infection and Immunity, a joint venture between the University of Melbourne and the Royal Melbourne Hospital, and the Michael F Tamer Chair of Biomedical Research at St Jude Children’s Research Hospital in Memphis.