Assertion: mucus | /r/CreatedBy | mucous cells
Facets:
value: naturally
type: MANNER
Source sentences:
text: Mucus is produced by mucous cells, which are frequently clustered into small glands located on the mucous membrane that lines virtually the entire digestive tract.
text: Mucus is naturally produced by mucous cells that are present in the linings of various tracts and cavities in the body.
text: Mucus is produced by mucous cells, which resemble to make mucous membrane and mucous glands.