The C/EBPα 30-kDa and BRM2 mutations fail to inhibit cell growth. The vertical axis of each graph displays cell numbers of K562 cells stably transfected with the indicated C/EBPα-ER fusion proteins in the absence (○) or presence (•) of β-estradiol, which induces C/EBPα fusion protein expression. ER indicates estrogen receptor vector control. The error bars represent the standard deviation from 2 independent clones for each C/EBPα-ER fusion protein.