1. Division of Immunology, Transplantation, and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy.
2. Vita-Salute San Raffaele University, Milan 20132, Italy.
3. Division of Experimental Virology, Department of Biomedicine, University of Basel, Basel 4003, Switzerland.
4. San Raffaele Telethon Institute for Gene Therapy (SR-Tiget) and Division of Regenerative Medicine, Stem Cells, and Gene Therapy, San Raffaele Scientific Institute, Milan 20132, Italy.
5. Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
6. Department of Immunology and Microbial Science, Scripps Research Institute, La Jolla, CA 92037, USA.
7. Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy.