Table 1. Primer sets of RT-PCR that used in this experiment.

Gene	Forward primer	Reverse primer	Product size
GAPDH	5’-CTCTGCTCCTCCTGTTCGAC-3’	5’-AAATGAGCCCCAGCCTTCTC-3’	408
IFNGR1	5’-TAAATGGAGACGAGCAGGAAG-3’	5’-TGAATACCAGGCTAAGCACTA-3’	342
IFNGR2	5’-TTTAGAGTCGGGCATTTAAGCA-3’	5’-TCAGGACCAGGAAGAAACAGG-3’	145