Professor of Biochemistry, Faculty of Medicine, Universidad Nacional Autonoma de Mexico,UNAM and
Medical Researcher, Center of Research on Infectious Diseases, National Institute of Public Health
Doctor in Biology (Biochemistry) Faculty of Sciences , UNAM, 1963. Fellow John Simon Guggenheim Memorial Foundation, 1963 Doctor Honoris causa, Universite du Paris Xlll, Republique Francaise, Ministere de l'Education Nationale, Academie de Creteil, 1984. Visiting Professor in four occasions, at Scripps Institution of Oceanography, University of California, San Diego at La Jolla, California, during his sabbatical years, 1964, 1982, 2002, 2005 and Visiting Researcher, Department of Chemistry, University of California, San Diego, at La Jolla, 1986. 50 scientific publications and 16 books.