1. Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.
2. Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland.
3. Proteomics Core Facility, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.
4. Electron Microscopy Core Facility, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.