CD276 and neoplasm: The results of blocking of B7-H3 using preinjcetion of Affibody molecule before injection of the [99mTc]Tc-ZAC12*-ZAC12*-GGGC and [99mTc]Tc-SYNT-179 in mice bearing SKOV-3 as B7-H3-positive xenografts (Fig. 9) showed that the tumour uptake for both radioconjugates reduced when B7-H3 is blocked by injection of Affibody molecule before injection the radiolabelled conjugate, confirming B7-H3-specific binding in vivo.