Autores:Peter N. Devreotes, Melanie H. Cobb, Rochelle Long, Adam P. Arkin, Henry R. Bourne, Ronald Taussig, James T. Stull, Elliott M. Ross, Arthur Weiss, Michael J. Berridge, Alfred G. Gilman, Jason G. Cyster, James E. Ferrell, Michael Gold, David A. Fruman, Bruce A. Harris, Melvin I. Simon