ERBB2 and neoplasm: Figure 6 shows HER2 receptor occupancy in the tumor by the synapse (HER2_ROSynapse) and by the TCB-HER complex (HER2_ROTCB_Complex), as well as CD3 receptor occupancy by the synapse (CD3_ROSynapse) and by the TCB-CD3 complex (CD3_ROTCB_Complex), at three dose levels (0.01 mg, 1 mg, 100 mg), comparing two TCBs with different CD3 affinities (HER2-CD3L vs. HER2-CD3H).