1. Department of Molecular Physiology and Biophysics, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
2. Department of Pediatrics, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
3. Department of Internal Medicine, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
4. Central Microscopy Research Facility, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
5. Department of Radiology, University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
6. Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242, USA.
7. Howard Hughes Medical Institute (HHMI), University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.