Baruj Benacerraf was awarded Nobel Prize 1980 in Physiology/Medicine "for their discoveries concerning genetically determined structures on the cell surface that regulate immunological reactions." 
                            Nationality    Venezuela
                            Institution    Harvard Medical School, Department of Pathology
                            Award          1980
                            Discipline     Physiology/Medicine
                            Co-recipients  Jean Dausset
                            MotivationAwarded with Nobel Prize 1980 in Physiology/Medicine "for their discoveries concerning genetically determined structures on the cell surface that regulate immunological reactions." 
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                            Further Information on the Official Web Site of the Nobel Prize