1. Monell Chemical Senses Center (K.L.T., J.G.), University of Pennsylvania, Philadelphia, Pennsylvania 19104
2. Institute for Diabetes, Obesity, and Metabolism (K.L.T.), University of Pennsylvania, Philadelphia, Pennsylvania 19104
3. Department of Medicine (R.R.T.), University of Pennsylvania, Philadelphia, Pennsylvania 19104
4. U.S. Department of Agriculture (T.N.D., R.W.G., S.H.A., N.L.K.), School of Veterinary Medicine, University of California, Davis, Davis, California 95616
5. Western Human Nutrition Research Center, Department of Nutrition (S.H.A., N.L.K., B.P.C., K.L.S., P.J.H.), School of Veterinary Medicine, University of California, Davis, Davis, California 95616
6. Department of Molecular Biosciences (B.P.C., K.L.S., P.J.H.), School of Veterinary Medicine, University of California, Davis, Davis, California 95616