Silencing of IKKε leads to G
phase arrest. Cell cycle distribution of (a) SKBR-3 cells and (b) MCF-7 cells treated with 50 nM siR-1, siR8, and scrambled siRNA were accessed by flow cytometry 48 hours post-transfection. Results are representative of three independent experiments, represented as mean ± standard deviation (n = 3). NC, negative control siRNA.