The dynamics of cytosolic calcium in photoreceptor cells

Bioessays 17 (4):282-286 (1995)
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Abstract

Analysis of the light‐induced changes of cytosolic Ca2+ ([Ca2+]i) in photoreceptor cells has been taken a step further with two recently published studies(1,2). In one, changes in [Ca2+]i were measured in single detached rod outer segments from Gecko in response to various light intensities. The advances of the other(2) are embodied in its employment of transgenic Drosophila, whose photoreceptors express a visual pigment that is insensitive to the wavelength of light used in the fluorescence imaging of [Ca2+]i. These studies provide a better basis for understanding the regulation of Ca2+‐mediated events in photoreceptor cells.

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