CD276 and urinary bladder carcinoma: In order to clarify whether anti‐B7‐H3 mAb or B7‐H3Bi‐Ab affect the proliferation of bladder cancer cells, the bladder cancer cells were cultured under different concentration of anti‐B7‐H3 mAb (Figure 8A) or B7‐H3Bi‐Ab (Figure 8B) for 71 hours.