Quantitative RT-PCR analyses of Axin2 transcripts, performed on the different cell lines treated with 10 μM CHIR or DMSO (control) for 24 hrs. Error bars show that standard deviation obtained from 3 independent experiments Transfection of individual TCF-expressing plasmids could restore the ability of d4TCF cells to respond t CHI as measured by Axin2 mRNA abundance 