Figure 1

CGN extract treatment reduces human cancer cell viability. (A) HeLa (B) HepG2 and (C) ZR751 cells were treated with doses range from 5 – 160 μg/ml for up to 24 h prior to analysis of cell viability by MTT assay. Cell survival was determined as the percentage of the control from three independent experiments. Accordingly, IC₅₀ were also determined. Each bar represents the mean ± SD (n = 3). Means marked with different letters, within each row, are significantly different (P < 0.05) analysed by one-way ANOVA supplemented with Tukey’s HSD test.