MRC1 and neoplasm: 99mTc‐anti‐MMR Nb‐IMDQ alone accumulated in an MMR‐dependent manner in the liver, spleen, small intestine, bone, and lymph nodes, while the uptake in the tumor was only slightly higher as compared to 99mTc‐BCII10 Nb‐IMDQ (Figures6 and 7; Table S2, Supporting Information).