Epithelial cells can undergo specialization to become gland cells, which secrete substances at the epithelial surface.
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Epithelial cells can undergo specialization to become gland cells, which secrete substances at the epithelial surface.
Epithelial cells acquire specialization as gland cells through differentiation, wherein they undergo changes in gene expression and morphology. This process leads to the development of specialized organelles, such as secretory vesicles or ducts, enabling the secretion of specific substances.