Validation of nine probe sets using quantitative Real-Time PCR (qRT-PCR). The log2-fold change of each entry relative to the entry with the minimum expression on the microarray for each probe set is plotted for both the microarray and the qRT-PCR results. Correlations between them are shown as "r". *, ** and *** represent significance level of 0.1, 0.05 and 0.01, respectively. The standard errors are represented by the vertical bars. Note that the y-axis scale differs for each gene.