Assertion: mucus | /r/CreatedBy | gland
Facets:
value: constantly
type: TEMPORAL
Source sentences:
text: Mucus is a slimy substance produced by membranes and glands to lubricate and protect certain parts of the body.
text: Mucus is produced by the small mucous-producing cells and glands that line the respiratory tract.
text: Mucus is a fluid, constantly produced by glands situated in the nose, trachea, bronchi and bronchioles.