MKI67 and neoplasm: As shown in the figure, PDT-BIPA diminished the proliferation and augmented the apoptosis of tumor cells, a conclusion drawn from the increasing expression of Ki67 (Figure 7B: the count of stained cell with bright fluorescent signal is 16 in control group, 13 in 0.8 mg/kg group and 7 in 1.6 mg/kg group), the enhancement of TUNNEL signal (Figure 7D: the count of stained cell with bright fluorescent signal is 6 in control group, 15 in 0.8 mg/kg group and 15 in 1.6 mg/kg group), and the obvious appearance of apoptotic cells in the 1.6 mg/kg group of the tumor HE staining (Figure 7A).