Fig. 2From: Rapid changes in mucociliary transport in the tracheal epithelium caused by unconditioned room air or nebulized hypertonic saline and mannitol are not determined by frequency of beating ciliaField of view from video-microscopy recordings and the analysis region for the mucus transport velocity (MTV) and cilia beat frequency (CBF) with the 3-by-3 gridded subset of regions for more detailed analysis. Arrows indicate the direction of air-flow and mucociliary transportBack to article page