Mucus Gel Point.

<p>A) Cartoon illustrating the mucus network changes for increasing macromolecule (mucin) concentration. The gel point (GP) is the point at which the strength of the chains interacting with one another engenders the elastic moduli () to be comparable in magnitude to the viscous moduli (). B) Master curve of ensemble-averaged MSDs. The solids concentration for sol-gel transition is obtained following <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0087681#pone.0087681-Larsen1" target="_blank">[36]</a>, in this case breaking of the slope in the master curve indicates the sol-gel transition occurs at a solids concentration between 4.0 and 5.0 <i>wt%</i>.