1. From the Department of Pathobiology and the Interdisciplinary Graduate Program in Nutritional Sciences (B.J.B., E.A.K., R.M.V., M.A., M.E.R.), Department of Bioengineering (M.S., C.M.G.), Department of Pathology (S.M.S., C.M.G., M.E.R.), University of Washington, Seattle, Wash; Dipartimento di Medicina Clinica e Sperimentale (M.R.), Università di Padova, Italy.