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3 Dec 2007

Volume 91, Issue 23, Articles (23xxxx)

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Appl. Phys. Lett. 91, 232101 (2007); http://dx.doi.org/10.1063/1.2818712 (3 pages)

T. Kita, D. Chiba, Y. Ohno, and H. Ohno
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Single molecule diffusion analysis on cellular nanotubules: Implications on plasma membrane structure below the diffraction limit

Stefan Wieser, Gerhard J. Schütz, Michael E. Cooper, and Hannes Stockinger

Appl. Phys. Lett. 91, 233901 (2007); http://dx.doi.org/10.1063/1.2822890 (3 pages) | Cited 8 times

Online Publication Date: 7 December 2007

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Cells are frequently interconnected by tunneling nanotubules, recently discovered cylindrical structures which facilitate material exchange. We employed here single molecule fluorescence microscopy to study the diffusion of the glycosylphosphatidylinositol-protein CD59 in the plasma membrane of tunneling nanotubules in living cells at subwavelength resolution. Our study provides the nanotubule radius in vivo, yielding a surprisingly narrow size distribution (7 nm standard deviation) around a mean value of 65 nm. Moreover, by separating longitudinal and transverse mobilities, we find isotropic diffusion behavior.
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87.16.D- Membranes, bilayers, and vesicles
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