1. Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
2. Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
3. Tumor Microenvironment Program, The Burnham Institute for Medical Research, La Jolla, CA 92037, USA.