1. Department of Psychiatry and Behavioral Neurosciences (L.G., F.Y., K.H., R.G.M.), Wayne State University School of Medicine, Detroit, Michigan 48201
2. Center for Integrative Endocrine and Metabolic Research, and Center for Molecular Medicine and Genetics (H.H.H.), Wayne State University School of Medicine, Detroit, Michigan 48201
3. Division of Metabolism, Endocrinology and Nutrition (G.J.M.), University of Washington, Seattle, Washington 98104
4. Department of Molecular Genetics (K.T.), Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8581, Japan
5. Department of Host Defense (S.A.), Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
6. Center for the Study of Weight Regulation and Department of Behavioral Neuroscience (M.J.L.), Oregon Health and Science University, Portland, Oregon 97239
7. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular (Consejo Nacional de Investigaciones Cientificas y Técnicas) and Department of Physiology, Molecular, and Cellular Biology, Universidad de Buenos Aires (M.R.), Buenos Aires 1428, Argentina