ERBB3 and neoplasm: It was also found that PAbs generated by the Mv-HER3 candidate were capable of recognizing the murine ErbB3 receptor on the cell membrane surface (Figure 3B) and induced a cytotoxic effect in the 3LL-R3 tumor cell line compared with the PI control (18.48% ± 4.29% vs. 107.5% ± 7.40%, p < 0.0001) (Figure 3C).