The time before -- A short history of the antibody problem -- The immunological scene around Köhler -- Köhler’s entry into science -- The quest for monoclonal antibodies -- Cell fusion -- Köhler in Cambridge -- Back in Basel -- The patent disaster -- The time after -- The Max-Planck-Institute of Immunobiology -- Getting Köhler to Freiburg -- “Köhler’s Max-Planck-Institute” -- Human…