2.4. Real time RT-PCR
All reactions were performed using Realplex4real time PCR machine (Eppendorf, Germany) using SYBR premix Ex Taq, (TaKaRaBio Inc., Japan). The PCR was set up in a 10 l reaction volume containing 5 l of 2× SYBR Premix Ex Taq master mix, 1.5 l of cDNA,1 l (10 M) of each primer and 2.5 l nuclease free water. The optimized cycling conditions were as follows: initial denaturationat 94◦C for 5 min, followed by 40 cycles of denaturation at 94◦C for 20 s, primer annealing at 56◦C for 30 s, and extension at 72◦C for 20 s. The fluorescence was measured at the end of each cycle. Amelt curve analysis was performed following amplification to verify the specificity of the amplified products. Melting curve analysis consisted