1. From the Lipid Metabolism Laboratory (F.K.W., A.H.L., G.G.D., E.J.S.), Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, Mass; the Division of Cardiology (F.K.W.), Beth Israel Deaconess Medical Center, and the School of Medicine and Pharmacology (P.H.R.B.), University of Western Australia, Perth, Australia.