Supplementary Materialssupplement. pig versions are resource intensive and pose some challenges that limit broad utilization by the field. The CF rat acquires gut obstruction at weaning and while it remains unclear if the CF rat lung will become spontaneously infected, the tracheal surface has a reduced airway surface liquid layer (ASL) but normal mucociliary clearance… Continue reading Supplementary Materialssupplement. pig versions are resource intensive and pose some challenges