epten withaMolecular weight of 10,000 The antihapten antibody will react with the hapten with out the carrier protein molecule.Landsteiner demonstrated that virtually any chemical substance can serve as an ant tigenic determinant or epitope if conjugated toa suitable carrier.He alse found that antibodies can distinguish between structural similar haptens.Antibodies recognize overall three-dimensional shapes of an antigenic determinant,rather than any specific chemical property. Carrier protein with hapten Hapten Hapten No antibody produced Antihapten antibodyThe antihapten antibody will react with the hapten with out the carrier protein molecule. Landsteiner demonstrated that virtually any chemical substance can serve as an antigenic determinant or epitope if conjugated to a suitable carrier. He also found that antibodies can distinguish between structural similar haptens. Antibodies recognize overall three-dimensional shapes of an antigenic determinant, rather than any specific chemical property