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[mass noun] A glycoprotein constituent of mucus:‘mucin is secreted by the salivary glands’
- ‘Most of the organic material in saliva is protein, some of which is glycoprotein or mucin, which contains both carbohydrate and protein components.’
- ‘Although more than 95% of the airway secretion consists of water, the main glycoprotein contained in the airway secretion is mucin.’
- ‘Slight turbidity is a result of mucin secreted by the lining of the urinary tract.’
- ‘The mucin is secreted by tiny glands called goblet cells in the conjunctiva.’
- ‘The best example of such a gel is mammalian mucus, which is based on the glycoprotein mucin.’
Mid 19th century: from mucus + -in.
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