Fig. 3From: Cistanche tubulosa phenylethanoid glycosides induce apoptosis in H22 hepatocellular carcinoma cells through both extrinsic and intrinsic signaling pathwaysCTPG induced chromosomal condensation and cell cycle arrest in H22 cells. H22 cells were treated with different concentrations of CTPG for 24 h. (a) Cells were stained with Hoechst 33,342 and observed by inverted fluorescent microscopy. The arrows indicated the chromosomal condensation or fragmentation. (b) Cell cycle distribution in H22 cells was analyzed by flow cytometry. ** p < 0.01; *** p < 0.001 compared to controlBack to article page