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      Fluorescence nanoscopy in cell biology

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      Nature Reviews Molecular Cell Biology

      Springer Nature

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          Abstract

          Fluorescence nanoscopy enables the optical imaging of cellular components with resolutions at the nanometre scale. With the growing availability of super-resolution microscopes, nanoscopy methods are being increasingly applied. Quantitative, multicolour, live-cell nanoscopy and the corresponding labelling strategies are under continuous development.

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          Most cited references 217

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          Imaging intracellular fluorescent proteins at nanometer resolution.

          We introduce a method for optically imaging intracellular proteins at nanometer spatial resolution. Numerous sparse subsets of photoactivatable fluorescent protein molecules were activated, localized (to approximately 2 to 25 nanometers), and then bleached. The aggregate position information from all subsets was then assembled into a superresolution image. We used this method--termed photoactivated localization microscopy--to image specific target proteins in thin sections of lysosomes and mitochondria; in fixed whole cells, we imaged vinculin at focal adhesions, actin within a lamellipodium, and the distribution of the retroviral protein Gag at the plasma membrane.
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            Sub-diffraction-limit imaging by stochastic optical reconstruction microscopy (STORM).

            We have developed a high-resolution fluorescence microscopy method based on high-accuracy localization of photoswitchable fluorophores. In each imaging cycle, only a fraction of the fluorophores were turned on, allowing their positions to be determined with nanometer accuracy. The fluorophore positions obtained from a series of imaging cycles were used to reconstruct the overall image. We demonstrated an imaging resolution of 20 nm. This technique can, in principle, reach molecular-scale resolution.
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              Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy.

              We propose a new type of scanning fluorescence microscope capable of resolving 35 nm in the far field. We overcome the diffraction resolution limit by employing stimulated emission to inhibit the fluorescence process in the outer regions of the excitation point-spread function. In contrast to near-field scanning optical microscopy, this method can produce three-dimensional images of translucent specimens.
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                Author and article information

                Journal
                Nature Reviews Molecular Cell Biology
                Nat Rev Mol Cell Biol
                Springer Nature
                1471-0072
                1471-0080
                September 6 2017
                September 6 2017
                :
                :
                10.1038/nrm.2017.71
                © 2017
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