| 21. | Like other mucins, MUC-4 is a high-molecular weight glycoprotein.
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| 22. | Surface mucous cells have large quantities of mucin granules in their rough endoplasmic reticulum.
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| 23. | Each species possesses mucin-secreting submaxillary glands.
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| 24. | This indicates that mucin segments extend into the ambient solution at a long distance.
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| 25. | Specialist microbes that break down mucin, survive on their host's carbohydrate excretions.
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| 26. | The mucin-like stalk permits it to bind to the surface of certain cells.
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| 27. | The physiological function of this protein may be related to its mucin-type character.
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| 28. | Secretory mucins are the main components of the mucous gel layer that coats the epithelium.
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| 29. | Being large glycoproteins, mucins have high carbohydrate content, contributing to their fibrous structure.
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| 30. | The secretion of mucin involves P2RY2 receptors found on the apical membrane of goblet cells.
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