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Which structure is characterized by having ciliated pseudostratified columnar epithelium?

User Picklepick
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These are found in the upper respiratory system and in the lining of the trachea. The epithelium contains goblet cells that produce mucins. Mucins are the component of a mucus that protects the airways. They protect the airways by trapping unwanted material in mucus coated cilia that are swallowed or expelled.  
User PsPranav
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