The lamina propria is a part of a tissue covered in this substance, and antimicrobial molecules aresecreted into this substance by Paneth cells. The secretion of this substance results in the diffusingout of calcium ions, which causes the repulsion of the many negative charges that cover thissubstance's principle constituent glycoprotein, leading to an up to 1,000-fold expansion. Guaifenesinis one drug that helps get rid of this substance and is part of a class of drugs called (*) expectorants. H.pylori ensconces itself in this substance before secreting urease. It is secreted by goblet cells, and thissubstance adheres to epithelial cells and acts as a diffusion barrier and lubricant. For 10 points, name thissubstance that builds up in the 
The lamina propria is a part of a tissue covered in this substance, and antimicrobial molecules aresecreted into this substance by Paneth cells. The secretion of this substance results in the diffusingout of calcium ions, which causes the repulsion of the many negative charges that cover thissubstance's principle constituent glycoprotein, leading to an up to 1,000-fold expansion. Guaifenesinis one drug that helps get rid of this substance and is part of a class of drugs called (*) expectorants. H.pylori ensconces itself in this substance before secreting urease. It is secreted by goblet cells, and thissubstance adheres to epithelial cells and acts as a diffusion barrier and lubricant. For 10 points, name thissubstance that builds up in the lungs and digestive track of people with cystic fibrosis.
The lamina propria is a part of a tissue covered in this substance, and antimicrobial molecules aresecreted into this substance by Paneth cells.
mucus [or phlegm; prompt on mucins]