Task: Answer Verification
Input (English): Question: Is parathyroid hormone a key hormone in the rapid minute-to-minute regulation of plasma Ca2+ homeostasis in rats?
Answer: PTH is not a key hormone in the rapid recovery of p-Ca2+ after induction of hypocalcaemia, but might, however, set the long-term levels of p-Ca2+ maintained by mammalian organisms. The involvement of an as yet unknown factor in the rapid regulation of p-Ca2+ is suggested.
Output (English): no