1. Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology (B.L.C.-C., C.L.G., J.R.P., D.M.K., M.R.N., S.L.L.), University of Bristol, Bristol BS1 3NY, United Kingdom;
2. Laboratory of Receptor Biology and Gene Expression (G.L.H.), Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892-5055