Next, the azido-meditope–AF647/Ile83Glu anti-HER2 memAb complex or azido-meditope–AF647/Ile83Glu anti-CD3 memAb complex was injected in the tail vein of NSG female mice (approximately 9 weeks old, Jackson Laboratory) bearing BT474 HER2-overexpressing breast tumor xenografts. Here, ERBB2 is linked to breast neoplasm.