3Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA 94143, USA.
4UC Berkeley–UCSF Graduate Program in Bioengineering, San Francisco, CA 94143, USA.
14Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA.
19Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA.
20Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA.
21Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA 94143, USA.