Calcitonin causes a rapid but short-lived drop in the level of calcium and phosphate in blood by promoting their assimilation in bones.Mouse: H-Cys-Gly-Asn-Leu-Ser-Thr-Cys-Met-Leu-Gly-Thr-Tyr-Thr-Gln-Asp-Leu-Asn-Lys-Phe-His-Thr-Phe-Pro-Gln-Thr-Ser-Ile-Gly-Val-Glu-Ala-Pro-NH2 (Cys1-Cys7) or H-CGNLSTCMLGTYTQDLNKFHTFPQTSIGVEAP-OH (Cys1-Cys7)