Assertion: esophagus's gland | /r/MadeOf | protein
Facets:
Source sentences:
text: saliva : A clear, slightly alkaline liquid secreted into the mouth by the salivary glands and mucous glands that consists of water, mucin, protein, and enzymes.
text: : A clear, slightly alkaline liquid secreted into the mouth by the salivary glands and mucous glands that consists of water, mucin, protein, and enzymes.