“…The expression of ErbB2 was analyzed by quantitative real-time PCR using SYBR Green (Power-UP SYBR-Green PCR Master Mix; Applied Biosystems, USA) in Quantstudio 3 Real-time PCR system (Applied Biosystems, USA). All the reactions were performed in triplicate and glyceraldehyde-3 phosphate dehydrogenase (GAPDH) was used as endogenous control in this study and mRNA fold changes were calculated using the 2 −ΔΔCT value [ 28 ]. The specific primer sequences used for GAPDH were as follows: 5′-GTCTCCTCTGACTTCAACAGCG-3’ (Forward), and 5′-ACCACCCTGTTGCTGTAGCCAA-3’ (Reverse).…”