MRC1 and neoplasm: Of note, the co‐injection of an excess of bivalent anti‐MMR Nb was reported before to diminish the extratumoral uptake of the monovalent anti‐MMR Nb, while increasing its uptake in the tumor.[29, 31] 99mTc‐BCII10 Nb‐IMDQ was used as a negative non‐targeting control.