Table 1: Primers sequences in this study.
| Primer | Sequence (5'-3') | Product size (bp) |
| COX-2-F | TGGCTGAGGGAACACAACAG | 74 |
| COX-2-R | AACAACTGCTCATCACCCCA | |
| NGF-F | CCCATCCCATCTTCCACAGG | 74 |
| NGF-R | GGTGGTCTTATCCCCAACCC | |
| GAPDH-F | TGTTGCCATCAATGACCCCTT | 202 |
| GAPDH-R | CTCCACGACGTACTCAGCG |