Bachelor's degree, National College Buenos Aires, 1960; Licence in Biology, School of Sciences, Buenos Aires, 1967; Doctor of Philosophy, Iowa State University, 1972.
Postdoctoral fellow, Washington University School Medicine, St. Louis, 1972-1976; assistant professor to associate professor, Wistar Institute, Philadelphia, 1976-1993; from assistant to associate professor molecular biology graduate group Medical School, University of Pennsylvania, since 1976; research fellow, Bristol-Myers Squibb PRI, Princeton, New Jersey, since 1993. Visiting senior research scientist department molecular biology, Princeton University, since 1993. Consultant Pew Latin American Fellows Program, San Francisco, 1991-1995.
Member International Cell Research Organisation, American Society Virology, American Society Microbiology.
Married Nury Vicens, December 25, 1967 (divorced). Children: Guillermo, Joslyne. Married Marcia Meeker, September 2002.