@article{oai:niigata-u.repo.nii.ac.jp:00001494, author = {Izumi, Naoya and Amizuka, Norio and Sakakura, Yasunori and Irie, Kazuharu and Yajima, Toshihiko and Ozawa, Hidehiro}, issue = {5}, journal = {Acta histochemica et cytochemica, Acta histochemica et cytochemica}, month = {}, note = {We have raised specific antisera against the extracellular domain of the rat/mouse calcitonin receptor (CTR), consequently immunolocalizing the CTR-positive cells in mouse tibiae. As expected, the immuno-reactivity for the CTR was intensely detected in cells identical to tartrateresistant acid phosphatase (TRAP) positive multinucleated osteoclasts and mononuclear cells, whereas no immunoreactivity was detected in osteoblasts and bone marrow cells. Most osteoclasts on the bone surface possessed the CTR, therefore indicating that bone resorbing osteoclasts could be prompted to respond to endogenous calcitonin. Immuno-electron microscopy revealed CTR-immuno-reactivity mainly on the plasma membranes including the pits associated with the cell membranes, and sometimes on intracellular translucent vacuoles and in the vesicles in the osteoclasts. These results lead to the postulation that CTR is chiefly localized to the cell surface of osteoclast, but is subjectde to continuous internalization followed by the receptor-transport to the Golgi apparatus.}, pages = {363--369}, title = {Immunohistochemical Localization of Calcitonin Receptor in Mouse Tibiae}, volume = {34}, year = {2001} }