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- Director, UCLA Broad Stem Cell Research Center
- Professor, Neurology
- Associate Director, Translational Research, UCLA Broad Stem Cell Research Center
- Professor, Pediatrics
- Associate Director, Technology Development, UCLA Broad Stem Cell Research Center
- Professor and Chair, Biological Chemistry
- Associate Director, Education and Technology Transfer, UCLA Broad Stem Cell Research Center
- Professor, Molecular, Cell and Developmental Biology