Then, Ts29.2 was radiolabeled with indium-111 (γ, 171 and 245 KeV, 2.80 days) using DOTA as chelator to determine its biodistribution using planar scintigraphic gamma imaging in CRC preclinical mouse models (HT29 and SW480/SW480-TSPAN8 tumors engrafted on nude mice). This evidence concerns the gene TSPAN8 and colorectal carcinoma.