MRC1 and Carcinoma, Lewis Lung: The anti-MMR 3.49 sdAb was radiolabeled to create both [99mTc]Tc-αMMR 3.49 and [18F]FB-αMMR 3.49 tracers, which were evaluated in wild-type C57BL/6, MMR-deficient, and CCR2-deficient mice inoculated with 3LL-R Lewis lung carcinoma cells [177].