Figure 3: Effects of FLCWK and 5-FU coadministration on tumor growth inhibition by using xenogen bioluminescence imaging. Tumor growth was observed from day 1 (4 days after human colorectal cancer cell HT-29-Luc vaccination) to day 17. A: Representative Xenogen imaging results from xenografted nude mice in different treatment groups. B: Quantitative analysis of Xenogen bioluminescence imaging data. The average tumor size at the designated time point is illustrated as the imaging signal intensity (photons/second/cm2/ser). n=12/group. Data are shown as mean±SD. *P<0.05 compared to the 5-FU 20 mg/kg group, **P<0.05 compared to the 5-FU 25 mg/kg group. FLCWK: Feng-liao-chang-wei-kang; 5-FU: 5-fluorouracil.