1. Department of Molecular and Cellular Biology (K.L.M., A.R.M., B.Y.), Baylor College of Medicine, Houston, Texas 77030;Duke University School of Medicine, Durham, North Carolina 27710;
2. Departments of Cell, Pharmacology and Cancer Biology (T.R.), Duke University School of Medicine, Durham, North Carolina 27710;
3. Mouse Behavior and Neuroendocrine Analysis Core Facility (C.R.M.), Duke University School of Medicine, Durham, North Carolina 27710;
4. Lester and Sue Smith Breast Center (A.T., S.G.H.), Baylor College of Medicine, Houston, Texas 77030;
5. Sarah W. Stedman Nutrition and Metabolism Center (R.D.S., O.I., J.R.B., C.B.N.), Duke University Medical Center, Durham, North Carolina 27710;
6. Dan L. Duncan Cancer Center (A.R.M., B.Y.), Baylor College of Medicine, Houston, Texas 77030 Duke University School of Medicine, Durham, North Carolina 27710;