Chief Cells

Also written as PTH.

A fall in ionised calcium is sensed by the calcium-sensing receptor on the parathyroid chief cells, and PTH is released.

What our notes say

A fall in ionised calcium is sensed by the calcium-sensing receptor on the parathyroid chief cells, and PTH is released. (Chemical Pathology Practice Examination)
"Zellballen" (cell-ball) nesting pattern of chief cells surrounded by sustentacular cells is classic for paraganglioma. (Head & Neck Pathology MCQs: Oral, Ear, Throat & Gland Tumors)
Chief cells are the predominant and functional cells of the parathyroid gland, responsible for PTH synthesis and secretion. (ADRENAL NEOPLASMS — Adenoma vs Carcinoma)
Chief cells predominate and are the functional cells of the parathyroid gland. (ADRENAL NEOPLASMS — Adenoma vs Carcinoma)
Adenomas are mostly composed of chief cells, while oxyphil adenomas are rare. (ADRENAL NEOPLASMS — Adenoma vs Carcinoma)
Parathyroid Hormone (PTH) is secreted by the chief cells of the parathyroid glands in response to low ionized serum calcium levels. (Calcium Homeostasis and Disorders)