1. From the Human Oncology and Pathogenesis Program (E.W., X.M., B.H.D., A.P., S.X.L., J.B., S.J.H., C.E., D.C., H.C., M.S., O.A.-W.), the Leukemia Service (M.C.T., M.G., J.H.P., L.R., A.M., O.A.-W.), and the Lymphoma Service (M.L.P., A.Z.), Department of Medicine, and the Department of Pathology (B.H.D.), Memorial Sloan Kettering Cancer Center, the Laboratory of Molecular Electron Microscopy, Rockefeller University (R.Q.N.), and the Department of Pathology and Laura and Isaac Perlmutter Cancer Center, New...