1. Laboratory of Molecular Signaling, The Babraham Institute (D.A.M.S., G.T., F.A.L., N.F.A., E.J.C., J.M.P.), Cambridge, United Kingdom CB2 4AT
2. Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center (S.M., Y.K., J.E.W., D.J.B.), Loma Linda, California 92357
3. Departments of Medicine and Biochemistry, Loma Linda University (S.M., D.J.B.), Loma Linda, California 92357