Prize for Medicine and Physiology, 1980 Benacerraf gained the
Nobel Prize, along with his colleagues Dausset and Snell "for
their discoveries concerning genetically determined structures
on the cell surface that regulate immunological reactions. They
have been responsible for turning what at first appeared as an
esoteric area of basic research on inbred mice into a major biological
system of the greatest significance for the understanding of cell
recognition, immune responses and graft rejection."