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SDS-PAGE of the purified trastuzumab (Lane 2), conjugated DOTA-trastuzumab (Lane 3) and [67Ga]-DOTA-trastuzumab (Lane 4) monoclonal antibodies. Lanes 1 and 5, standard high molecular mass protein markers with molecular weights of 212, 170, 116, 76, and 53 KDa; all samples showed a molecular mass related to the whole IgG is 150 KDa.
