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  • Title: 3D reconstruction of high-resolution STED microscope images.
    Author: Punge A, Rizzoli SO, Jahn R, Wildanger JD, Meyer L, Schönle A, Kastrup L, Hell SW.
    Journal: Microsc Res Tech; 2008 Sep; 71(9):644-50. PubMed ID: 18512740.
    Abstract:
    Tackling biological problems often involves the imaging and localization of cellular structures on the nanometer scale. Although optical super-resolution below 100 nm can be readily attained with stimulated emission depletion (STED) and photoswitching microscopy methods, attaining an axial resolution <100 nm with focused light generally required the use of two lenses in a 4Pi configuration or exceptionally bright photochromic fluorophores. Here, we describe a simple technical solution for 3D nanoscopy of fixed samples: biological specimens are fluorescently labeled, embedded in a polymer resin, cut into thin sections, and then imaged via STED microscopy with nanoscale resolution. This approach allows a 3D image reconstruction with a resolution <80 nm in all directions using available state-of-the art STED microscopes.
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