Affiliation: | 1. Department of Physiology, University of California, San Francisco, San Francisco, CA 94141 USA;2. Department of Medicine, University of California, San Francisco, San Francisco, CA 94141 USA;3. Gladstone Institute of Virology and Immunology, University of California, San Francisco, San Francisco, CA 94141 USA;4. Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, OR 97201 USA |