Table 2. All sequences of primers.
| Target gene | Forward | Reverse |
|---|---|---|
| MUC5AC | 5'-GGCTTCGTGCCAGTGTCCAT-3' | 5'-ACTGGCTTGGGCAACAGTCC-3' |
| EGFR | 5'-GTGCGCTTCAGCAACAACCC-3' | 5'-ACACTTTTGGCAGCCGCTCT-3' |
| MMP9 | 5'-GTCCAAGCCGTCT-3' | 5'-TCGCCTTCGGCCCTCAGAAA-3' |
| β-actin | 5'-CGGTGCTGTCCCTCTATGCG-3' | 5'-AGACGCATGATGGCATGGGG-3' |
MUC5AC, mucin 5AC; EGFR, epidermal growth factor receptor; MMP9, matrix metalloproteinase 9.