1Department of Cell and Tissue Biology, University of California at San Francisco, San Francisco, CA 94143, USA.
2Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California at San Francisco, San Francisco, CA 94143, USA.
3Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
4Helen Diller Family Comprehensive Cancer Center, University of California at San Francisco, San Francisco, CA 94143, USA.
5Department of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California at San Francisco, San Francisco, CA 94143, USA.
6Department of Anatomy, University of California at San Francisco, San Francisco, CA 94143, USA.
5Department of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California at San Francisco, San Francisco, CA 94143, USA.
5Department of Cellular and Molecular Pharmacology and Howard Hughes Medical Institute, University of California at San Francisco, San Francisco, CA 94143, USA.