Biophysical Journal 61: 487-493 (1992)
© 1992 the Biophysical Society

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Theory of fluorescence recovery after photobleaching measurements on cylindrical surfaces.

Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts 01545.

ABSTRACT

The theory of fluorescence recovery after photobleaching measurements of isotropic diffusion on a cylindrical surface is developed for Gaussian beam illumination centered perpendicular to an infinitely-long cylinder. A general analytical solution is obtained which is a function of the ratio of the cylindrical radius (r) to the beam exp [-2] radius omega. Numerical analysis of this solution demonstrates that significant deviations from one dimensional recovery are observed for omega less than 3r and from two-dimensional recovery for omega greater than or equal to 0.5r. Numerical data and an algorithm for analysis of recovery data where 0.5r less than or equal to omega less than or equal to 3r is presented.

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