Mucin,a glycoprotein,is found in secretions from these cells.

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Goblet cells are specialized cells that secrete mucin, a glycoprotein that forms mucus. Mucin is an important component of mucus, which plays a critical role in protecting and lubricating the epithelial surfaces of the body, particularly those in the respiratory, digestive, and reproductive tracts. Sebaceous glands secrete sebum, a lipid-based substance that lubricates and waterproofs the skin and hair. Serous glands secrete a watery, protein-rich fluid that often contains enzymes or antibodies. Ceruminous glands secrete cerumen, which is a waxy substance that helps to protect the ear canal.

Mucin,a Glycoprotein,is Found in Secretions from These Cells