1. From the Experimental Atherosclerosis Section, National Heart, Lung, and Blood Institute (X.J., Y.L., J.C., R.F., H.S.K.)
2. Scanning Probe Microscopy Unit, National Institute of Biomedical Imaging and Bioengineering (E.K.D.)
3. Light Microscopy Core, National Heart, Lung, and Blood Institute (C.A.C.)
4. Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel (N.V., L.A.).
5. Electron Microscopy Core, National Heart, Lung, and Blood Institute (E.S.)
6. Structural Biology Core, National Institute of Drug Abuse (S.N.J., L.M., A.S.W.), National Institutes of Health, Baltimore, MD