High molecular weight mucoproteins that protect the surface of EPITHELIAL CELLS by providing a barrier to particulate matter and microorganisms. Membrane-anchored mucins may have additional roles concerned with protein interactions at the cell surface.
    

concept

Goblet cells are packed full of mucous globules (blue), which they release to provide lubrication and protection to the inner surfaces of the intestine and the respiratory system among others. The mucous globules are condensed inside the goblet cell but expand hugely once they are released, absorbing water within 20 milliseconds. This rapid release occurs in response to lots of different stimuli and allows the mucous to get to work instantly.

Human bronchus, excess mucin. SEM

Bronchus, mucus and dust particle, SEM

Human tissue mucins / H.C. Cook.

Ueber Gallerkrebs der Brustdrüse / von Dr. Doutrelepont zu Bonn.

Heatley, Norman George, OBE (1911- 2004)

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Human tissue mucins / H.C. Cook.

Ueber Gallerkrebs der Brustdrüse / von Dr. Doutrelepont zu Bonn.

Heatley, Norman George, OBE (1911- 2004)

Human bronchus, excess mucin. SEM