Chronic Cannabis Smoking, Oxidative Stress and the Pulmonary Innate Immune Response

Passage of a thin flexible tube through the mouth, into the windpipe and then into the bronchial tubes so that the study doctor can look into the lungs to perform Bronchoalveolar lavage (BAL), cytologic brushing, and protected specimen brushing.

To identify any previously undiagnosed lung disease that will either increase the risk of bronchoscopy or confound results of the study.

To collect blood cells and serum for analyses.

To administer the appropriate medications for the bronchoscopy procedure.