Figure 6From: Liquid hyper-absorption as a cause of increased DTPA clearance in the cystic fibrosis airway Liquid and DTPA absorption rates increase linearly with added liquid volume. Volumes of 2.5, 5, and 10 μL of Tc-DTPA in Ringer’s solution were added to the apical surface of CF HBE cells (one line, six filters per volume), and both DTPA and liquid absorption were measured over 24 h. Each data point is mean ± SEM.Back to article page