Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The mucociliary escalator. (a) MUC5B is the predominant mucin throughout the airway, and the majority is secreted distally. (b) MUC5AC is predominantly secreted in the proximal airway. (c) The mucus (gel) layer is made up of MUC5B, MUC5AC, water and ions. (d) The periciliary layer consists of the membrane‐bound mucins, water and ions.
