Distribution of Respiratory Mucin Proteins in Human Nasal Mucosa

Objectives/Hypothesis The upper respiratory tract is involved in many acute and chronic respiratory tract diseases that present with the symptom of mucus hypersecretion. Mucin genes that encode for the backbone of glycoproteins contribute to the viscoelastic property of airway mucus. We examined the cellular expression and distribution of two major respiratory mucus‐forming glycoproteins, MUC5AC and MUC5B, in normal human nasal tissues.

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