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“a thick fluid produced by the linings of some tissues of the body and is secreted as a protective lubricant coating by cells and glands of the mucous membranes”
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“a thick fluid produced by the linings of some tissues of the body and is secreted as a protective lubricant coating by cells and glands of the mucous membranes”
(Greek: mucus; a protective secretion from the mucous membranes in the nose, throat, and lungs; a thick fluid produced by the linings of some tissues of the body and is secreted as a protective lubricant coating by cells and glands of the mucous membranes)