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within 12 hours, carbon monoxide levels normalize

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Methods Human bronchial brushing collection Primary human bronchial epithelial (HBE) cells (material obtained from the Biobank of the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China, and approved the ethics committee of the First Affiliated Hospital of Guangzhou Medical University 2020-51) were obtained from brushings of 56-order bronchioles taken during fiberoptic bronchoscopy with an endoscopic cytobrush

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November 2012