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. 1975 Feb;23(2):103-6.
doi: 10.1177/23.2.1167875.

Localization of a thrombin-sensitive calcium pool in platelets

T Sato, L Herman, J A Chandler, A Stracher, T C Detwiler

Localization of a thrombin-sensitive calcium pool in platelets

T Sato et al. J Histochem Cytochem. 1975 Feb.

Abstract

Electron microscopic x-ray microprobe analysis of pyroantimonate precipitates in platelets fixed in osmium tetroxide-pyroantimonate revealed calcium localization in the nucleoids of alpha-granules. This pool of calcium had largely disappeared within 10 sec after stimulation of platelets by thrombin. Such a rapid change suggests that this calcium pool may have a regulatory role in stimulus-response coupling.

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