| Completed | N/A | 10 | US | Etanercept inhibition of ozone-induced airway hyper-responsiveness., Only a single group of subjects, known to demonstrate airway hyperresponsiveness at 20 hr post exposure to ozone will be studied in the, intervention. | National Institute of Environmental Health Sciences (NIEHS) | Bronchitis | 01/10 | 02/12 | | |
