Assertion: mucus | /r/CapableOf | trap pathogen
Facets:
Source sentences:
text: Normally, mucus develops in the lungs to help trap dirt and pathogens; the cilia then clears this away, and life goes on as normal.
text: Mucus also coats the existing entry points into the body, such as the nose, mouth and stomach, and catches pathogens that try to get in that way.