# Calcium - how and why?

Jaiswal, JK (2001) Calcium - how and why? In: Journal of Biosciences, 26 (3). pp. 357-363.

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Calcium is among the most commonly used ions, in a multitude of biological functions, so much so that it is impossible to imagine life without calcium. In this article I have attempted to address the question as to how calcium has achieved this status with a brief mention of the history of calcium research in biology. It appears that during the origin and early evolution of life the $Ca^{\mathrm{2+}}$ ion was given a unique opportunity to be used in several biological processes because of its unusual physical and chemical properties.