Western blot analyses of MAb 56F9. Lane 1, Precision Plus Protein standard (Bio-Rad); lane 2, HSA; lane 3, 2,4 TDI-HSA; lane 4, 2,6 TDI-HSA; lane 5, 2,4;2,6 TDI-HSA; lane 6, 2,3 DMPI-HSA; lane 7, 2,5 DMPI-HSA; lane 8, 3,4 DMPI-HSA; lane 9, OTI-HSA; and lane 10, PTI-HSA.