1. Steroid Hormones Section (G.G., D.S., J.E.W.M., S.S.S.), Maryland 20892-0805
2. Laboratory of Molecular and Cellular Biology National Institute of Diabetes, Digestive and Kidney Diseases and the Laboratory of Receptor Biology and Gene Expression (C.L.S.) National Cancer Institute/Division of Basic Sciences National Institutes of Health Bethesda, Maryland 20892-0805