Fig. 8From: Role of Raf-kinase inhibitor protein in colorectal cancer and its regulation by hydroxycamptothecineApoptosis induction by hydroxycamptothecine (HCPT) in two group cells. Each group was treated with HCPT for 48 h at 0.08 mg/L, 0.16 mg/L concentrations. 1 × 106 cells were collected and analyzed by flow cytometry after staining with Annexin V/PIBack to article page