A, Schematic of the FastFUCCI cell cycle reporter system14. Red, yellow and green fluorescent cells correspond to the cells in G1, G1/S and S/G2-M, respectively. B, Cell cycle analysis of FastFUCCI labeled NCI-H1373 treated with the indicated drugs for 48 h. C, RT-qPCR data showing the relative mRNA levels of p27/CDKN1B in parental and AHR knockout cells treated with the indicated drugs for 24 h. D, Western blots of cell lysates from parental and AHR knockout NCI-H1373 cells treated with the indicated concentrations of RBN-2397 for 48 h. E, Fraction of parental (top) and AHR knockout (bottom) NCI-H1373 cells staining positive for Annexin V treatment with the indicated drugs for 24 h. Data shown as mean values ± SD; n = 3.