Human Nasal Sero-mucinous Glands after Permanent Tracheostomy

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Abstract
The fine structure of human nasal seromucinous glands was studied in 13 permanently tracheotomized patients. The cytoplasm of serous secreting cells showed markedly proliferation and activity. Mucous glands were scanty. These changes were attributed to improvement in factors affecting the nasal epithelium after tracheostomy such as absence of the traumatizing effect of dust, fumes, and microorganisms, high humidity inside the nose, constant and high temperature in the anterior part of the nose, and change in pH of the nasal secretion towards the alkaline side.

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