“…To ensure the accuracy and reliability of the qRT-PCR quantitative results, three housekeeping genes, PPIA, HPRT and eEF-1γ, were therefore used as internal control [36]. Furthermore, the other two genes, PDK4 and AMPD1, which also differently expressed in our study, have already been studied in our previous research [89,90]. The results for a panel of the 12 genes were in good agreement with the microarray hybridization results (Table 4) and there was a highly significant correlation (r = 0.58, P = 0.0019) between the two techniques.…”