The reagents were gently mixed and incubated in order, 1 h at 42 °C, 10 min at 70 °C and the synthesized cDNA was stored at 4 °C for further use. The constitutively expressed housekeeping gene, β-actin was used both as a positive control and for sample normalization. The amplified product sizes and the sequences of primers used for β-actin, TNFα, IL-10 and lysozyme c and g were studied. Each PCR reaction consisted of 13.1 μL dH2O, 2 μL 10 × PCR buffer, 0.5 μL 10 mM dNTPs, 1.5 μL MgCl2, 0.2 μL (10 pmol) of each forward and reverse primers, followed by 0.5 μL (0.05 U/μL) JumpStart™ AccuTaq la DNA polymerase and 2 μL cDNA. The amplification profile was: 95 °C for 3 min followed by 30 cycles denaturation for 45 s at 94 °C, at appropriate annealing temperature for 45 s (Table 2) and extension at 72 °C for 45 s, followed by a final extension for 10 min at 72 °C.