From the Departments of Physiology (A.N., C.P.B., J.M.D., M.V.C.), Medicine (M.V.C.), and Structural and Cellular Biology (S.D.C.), University of South Alabama, Mobile, Ala, and Department of Medicine (S.O.K., S.L.P.), University of British Columbia, Vancouver, British Columbia, Canada. (2000-02-04時点)