Figure 2.

Video-fluoroscopic examination of swallowing in a control animal (A) and a dysphagia model 1 month after bilateral (B) and unilateral (C) sectioning of the Ph-X during oral (i), pharyngeal (ii), and esophageal stages of swallowing (iii). The areas of contrast medium during the oral and esophageal stage of swallowing are depicted by dashed lines in panels (i,iii) [i.e., esophageal area in panel (iii)]. The dye areas in the pharyngeal cavity during bolus transfer in the pharyngeal stage of swallowing are shown by shaded areas in panel (iv) (i.e., pharyngeal area) delineated with reference to the oral (i) and esophageal area (iii).