Figure 7From: Liquid hyper-absorption as a cause of increased DTPA clearance in the cystic fibrosis airway DTPA absorption is driven by osmotic gradients across the airway epithelium. DTPA absorption rates were measured in two CF and two non-CF cell lines (n = 6 per concentration per line) under increasing basolateral mannitol concentrations. Each data point is mean ± SEM. Measurements were made after the addition of 10 μL of Tc-DTPA in PBS.Back to article page