A Effect of plant extracts on cell cycle distribution of NCTC cells. Co-treated and pre-treated cells were stained with propidium iodide and analyzed by flow-cytometry. B DNA histograms analyzed by MODFITTM LT 3.0 software. Results are represented as mean ± SD (n = 6). Each phase of individual samples was compared with correspondent phase in untreated control using paired t-test. Statistically significant differences were observed (##p < 0.01).