Isolation and characterization of three toxic phospholipases from the venom of the coral snake Micrurus nigrocinctus: J. Mochca-Morales,1B. M. Martin,2F. Z. Zamudio1 and L. D. Possani1 (1Department of Biochemistry, Centro de Investigación sobre Ingenieria Genética y Biotecnología UNAM, Cuernavaca, Mor. 62270, Mexico, and 2National Institute of Mental Health, Molecular Neurogenetic Unit, Clinical Neuroscience Branch, Building 10, 3D16, Bethesda, MD 20892, U.S.A.)