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mucin

mucin

8.4
A thick slippery substance in body fluids that protects and lubricates surfaces like the nose and eyes
  • noun
  • /ˈmjuːsɪn/
  • Specialized
translation icon : mucina
  • Davies and Singer compared the use of a mucin-based artificial saliva and a pilocarpine mouthwash in the treatment of radiation-induced xerostomia.
  • stain positive for mucin
  • polymorphic epithelial mucin
  • epithelial mucin

The junk foods also contain emulsifiers like polysorbate and carrageenan and lecithins that degrade the mucin layer.

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Examples

  • In the intestines, mucin forms a gel-like layer that protects the gut lining from irritation.

  • The submandibular gland secretes a mixture of serous and mucin.

    Academic text (1999)
  • So I'm definitely in my snail mucin era and I'm all about it.

  • Ampules are super concentrated and I love using this because it has snail mucin in it.

  • It's a snail mucin, which is a protein in snail mucus.

  • More common, however, are edema, extensive mucin deposition, and slight sclerosis.

    Academic text (2007)
  • As the amount of ptyalin decreases and mucin increases, saliva can become thick and viscous and present problems for the elderly.

    Academic text (1999)
  • The control and GABA+HS groups showed greater numbers of goblet cells, and mucin secreted by the goblet cells also seemed to form an effective mechanical barrier.

    Academic text (2015)
  • MUC5B encodes a mucin-5B precursor protein that contributes to airway mucous production and might have an important role in lung host defense.

    Academic text (2016)
  • The protective barrier of the stomach is largely composed of mucin, which helps prevent damage from gastric acids.

Surface Forms

mucin singular
mucins plural

Morphology

mucin = mucus (semi-transparent) = mucus + in

Formed from 'mucus' plus the technical protein-forming suffix '-in'; the relation to mucus is clear but the suffix is specialized vocabulary not known to all learners.

Etymology

The word mucin comes from mucus, a Latin word meaning 'slime', plus the ending -in that names proteins. So mucin is the slimy protein in mucus that helps lubricate and protect body surfaces.