一种由 37 个氨基酸组成的降钙素家族神经肽,通过 (CRLR) 起作用。
Calcitonin is a 32 amino acid peptide hormone secreted by parafollicular cells of the thyroid gland in humans, and in many other animals in the ultimopharyngeal body. It acts to reduce blood calcium, opposing the effects of parathyroid hormone. Calcitonin has been found in fish, reptiles, birds, and mammals.