Electron Microscopy Core Facility of the NHLBI; NATIONAL HEART, LUNG, AND BLOOD INSTITUTEUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Heart Lung & Blood Institute (NHLBI) [ZIAHL004232, ZIAHL004232, ZIAHL004232, ZIAHL004232, ZIAHL001786, ZIAHL004232, ZIAHL001786, ZIAHL001786, ZIAHL001786, ZIAHL004232, ZIAHL004232, ZIAHL004232, ZIAHL001786, ZIAHL001786, ZIAHL001786, ZIAHL001786, ZIAHL001786, ZIAHL004232, ZIAHL001786, ZIAHL004232] Funding Source: NIH RePORTER