the coupling was done using the bifunctional reagents s-acetylmercaptosuccinic anhydride for antibody and succinimidyl 3- ( 2-pyridyldithio ) propionate for ricin , and this resulted in the loss of b-chain binding activity , while impairing neither the toxic potential of the a-chain nor the activity of the moab .
C0003241
antibody
C0003250
moab