They say music brings people together, but in the case of a pair of young researchers in Canberra in the 1970s, a mutual love of opera may have set a Nobel prize-winning partnership in motion.
It was 1973, and Rolf Zinkernagel, then only a few years out of medical school and a keen opera fan, left his Swiss home to join a research group at the Australian National University.
He was given a spot in a laboratory with Peter Doherty, a postdoctoral researcher at the time.