Please answer the following question: Generate a question about the topic "Calcitonin" whose answer would be: Calcitonin (also known as thyrocalcitonin) is a 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells (also known as C-cells) of the thyroid , and in many other animals in the ultimobranchial body ..
Answer:
what produces calcitonin?