Expression levels of the TET1-3 and IDH1-2 genes in fetal and adult livers. Gene expression at the mRNA level was determined using quantitative RT-PCR and specific primers in samples from 14 fetal and 33 adult livers and normalized against EIF2B2. The boxplots show the relative gene expression in a log2-scale. The maximum length of each whisker is 1.5 times the interquartile range (IQR). The significance of differences is indicated by asterisks: *P < 0.01, ***P < 0.0001.
Ivanov et al. Genome Biology 2013 14:R83 doi:10.1186/gb-2013-14-8-r83