Figure 4

PEI and taxol combination increases G2M cell cycle arrest in MCF7 and MDA-MB-231 breast cancer cells. The MCF7 cells were treated with 5 μM of PEITC and 10 nM of taxol alone or in combination. Due to higher resistance of MDA-MB-231 cells, PEITC at 10 μM and taxol at 100 nM were used. The DNA content was by flow cytometry to determine the distribution of cells in each phases