UCSF/UC Berkeley Joint Graduate Group in Bioengineering, University of California, San Francisco, California, USA.|UCSF/UC Berkeley Joint Graduate Group in Bioengineering, University of California, San Francisco, California, USA.|UCSF/UC Berkeley Joint Graduate Group in Bioengineering, University of California, San Francisco, California, USA.|UCSF/UC Berkeley Joint Graduate Group in Bioengineering, University of California, San Francisco, California, USA.