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Georges Kohler (1946–1995) was a German immunologist who, with Cesar Milstein, perfected the hybridoma technique of preparing monoclonal antibodies against specific antigen, for which they received the Nobel Prize in Physiology or Medicine, 1984. Kohler joined Milstein at Cambridge as a postdoctoral fellow. His doctoral dissertation had shown that a thousand different murine immunoglobulins could react with a single epitope. He and Milstein investigated antibody gene mutations. Kohler conceived the idea of producing hybridomas. Their synthesis of monoclonal antibodies was proof for the clonal selection theory which postulated that a single B cell and its progeny could synthesise a single antibody expressed as a cell surface receptor and a secreted product. Monoclonal antibodies have broad applications in both basic research and clinical science. After Cambridge, Kohler became an Investigator at the Basel Institute for Immunology and was subsequently appointed Director of the Max-Planck Institute for Immunology in Freiburg im Breisgau. Keywords: hybridoma technique; monoclonal antibodies; antibody gene mutations; myeloma; clonal selection theory; immunoglobulins |
