High concentration(H) Middle concentration(M) Low concentration (L) AP 4 mg/ml 400μg/L 40μg/L 5-FU 500μg/ml 50μg/ml 5μg/ml Matrine 1.5 mg/ml 0.15 mg/ml 15μg/ml AP: Astragalus Polysaccharide; 5-FU: 5-Fluorouracil

Table 1: Three groups of drug concentrations for screening experiments.