1. Department of Microbiology and Immunology The University of Melbourne at the Peter Doherty Institute for Infection and Immunity Melbourne VIC 3000 Australia
2. Division of Chemistry and Structural Biology Institute for Molecular Bioscience The University of Queensland Brisbane QLD 4072 Australia
3. Australian Research Council Centre of Excellence in Advanced Molecular Imaging The University of Queensland Brisbane QLD 4072 Australia
4. Australian Research Council Centre of Excellence in Advanced Molecular Imaging The University of Melbourne Melbourne VIC 3000 Australia
5. Infection and Immunity Program Biomedicine Discovery Institute Monash University Clayton VIC 3800 Australia
6. Department of Biochemistry and Molecular Biology Biomedicine Discovery Institute Monash University Clayton VIC 3800 Australia
7. Australian Research Council Centre of Excellence in Advanced Molecular Imaging Monash University Clayton VIC 3800 Australia
8. Institute of Infection and Immunity Cardiff University School of Medicine Cardiff CF14 4XN UK