Figure 2

Effect of C. demersum crude extract on the viability of different human tumor cell lines at the concentrations of 10–300 µg/ml after 24, 48, and 72 h of incubation, assessed with the use of the MTT assay. The results are presented as the mean ± SD. ANOVA post hoc Dunnett’s test: *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001 versus control, n = 3.