Histology
Gastric chief cells are epithelial cells found deep within the gastric unit or gastric gland, and form the base of the gastric unit. The gastric chief cell has an extensive network of lamellar rough endoplasmic reticulum organized around the nucleus. The gastric chief cell also contains many large secretory vesicles filled with digestive enzymes in the apical cytoplasm.
Parathyroid chief cells make up the majority of the parathyroid gland along with adipocytes and oxyphil cells. Parathyroid chief cells have large amounts of organelles associated with protein synthesis. As in many endocrine organs, with age, more oxyphil cells appear in the parathyroid gland.
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