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Determination of localized diffusion coefficients in gels using confocal scanning laser microscopy

Determination of localized diffusion coefficients in gels using confocal scanning laser microscopy The development of a photobleaching technique, CFMM (continuous fluorescence multipoint microphotolysis), to measur e diffusion coefficients in gel systems using a confocal scanning laser microscope is described. Diffusion coefficients (D) were determined for fluorescently labelled dextrans of varying molecular weight in agarose gels, and the results compared with two other methods. CFMM enabled diffusion coefficients to be rapidly determined from the profile across an irradiated area within a defined microscopic location of the gel. The technique was experimentally simple and produced values of D that corresponded well with classical double‐diffusion cell methods. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Microscopy Wiley

Determination of localized diffusion coefficients in gels using confocal scanning laser microscopy

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References (35)

Publisher
Wiley
Copyright
Copyright © 1995 Wiley Subscription Services
ISSN
0022-2720
eISSN
1365-2818
DOI
10.1111/j.1365-2818.1995.tb03668.x
Publisher site
See Article on Publisher Site

Abstract

The development of a photobleaching technique, CFMM (continuous fluorescence multipoint microphotolysis), to measur e diffusion coefficients in gel systems using a confocal scanning laser microscope is described. Diffusion coefficients (D) were determined for fluorescently labelled dextrans of varying molecular weight in agarose gels, and the results compared with two other methods. CFMM enabled diffusion coefficients to be rapidly determined from the profile across an irradiated area within a defined microscopic location of the gel. The technique was experimentally simple and produced values of D that corresponded well with classical double‐diffusion cell methods.

Journal

Journal of MicroscopyWiley

Published: Jan 1, 1995

Keywords: ; ; ; ; ; ; ; ; ; ;

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