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TRPV1 protein expression in the bronchus and trachea of guinea pigs with chronic cough
| Group | Relative expression |
|---|---|
| Normal control | 0.15 ± 0.06 |
| Inhalation of citric acid for 5 days | 0.26 ± 0.11 |
| Inhalation of citric acid for 10 days | 0.32 ± 0.13 |
| Inhalation of citric acid for 15 days | 0.73 ± 0.29* |
| Inhalation of citric acid for 20 days | 0.70 ± 0.25* |
| Inhalation of citric acid for 25 days | 0.51 ± 0.20 |
*P < 0.05 vs. normal control.
