Department of Biomedical Engineering and Genome Center, University of California at Davis, Davis, CA, USA.|Department of Biomedical Engineering and Genome Center, University of California at Davis, Davis, CA, USA.|Department of Biomedical Engineering and Genome Center, University of California at Davis, Davis, CA, USA.|Department of Biomedical Engineering and Genome Center, University of California at Davis, Davis, CA, USA.|Center for RNA Systems Biology, University of California at Berkeley, Berkeley, CA, USA.|Department of Biomedical Engineering and Genome Center, University of California at Davis, Davis, CA, USA.