Murine breast cancer cell lines display different sensitivities to PAC. A EMT6, 4Â T1 and EO771 cells were treated with increasing concentrations of PAC. Coomassie Blue staining was used to assess the toxic dose of the drug in the different cell lines after 72Â h. B Fluorescent microscopy pictures of DAPI-stained cells with or without treatment with 0.5uM PAC for 72Â h. (TIF 14849 kb