Which one of the following is NOT part of the mucosal surface defense barrier against microbial invasion?

Question

Quizplus · Accepted Answer

Keratinized cells are found in the skin, not in the mucosal surfaces. The other choices listed are all part of the mucosal surface defense mechanism against microbial invasion. Lysozyme breaks down bacterial cell walls, ciliated epithelial cells move mucus and trapped microbes away from the mucosal surface, lactoferrin binds with iron which limits bacterial growth, and mucus physically traps and removes microbes from the body.

Which One of the Following Is NOT Part of the Mucosal