Affiliation: | 1. Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA;2. Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA 94305, USA;3. Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA;4. Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA |