1. From the Kimmel Center for Biology & Medicine at the Skirball Institute of Biomolecular Medicine (B.B.B., C.A.B.-O., J.J.R., A.E.F., O.A., D.H.T.), Molecular Biophysics (B.B.B., D.H.T.) and Developmental Genetics Graduate Programs (C.A.B.-O., D.H.T.), and Departments of Radiology (D.H.T.) and Pathology (D.H.T.), New York University School of Medicine, New York, NY.