CD274 and neoplasm: The tumor cell labelling efficiency of B10, B11, iNF-B11, B10-iNF and the bispecific construct B10–B11 was evaluated on the EGFR and PDL1 positive tumor cell lines MDA-MB-231 and MNNG-HOS, as well as on the PDL1+/CHO cell line engineered to overexpress PDL1 stably (Figure 3).