| abstract |
Herein is reported a method for the determination of the simultaneous binding of a bispecific antibody to a first and a second antigen comprising the steps of a) incubating a cell expressing cell-membrane bound FRET-donor-tagged first antigen and FRET-acceptor-tagged second antigen with the bispecific antibody, and b) determining the simultaneous binding of the bispecific antibody by determining the energy transfer from the FRET-donor to the FRET-acceptor. |