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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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Localization microscopy at doubled precision with patterned illumination.

Jelmer Cnossen1,2, Taylor Hinsdale1, Rasmus Ø Thorsen1

  • 1Department of Imaging Physics, Delft University of Technology, Delft, the Netherlands.

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|December 11, 2019
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Summary
This summary is machine-generated.

We enhanced single-molecule localization precision using widefield imaging, achieving a two-fold improvement over standard methods. This breakthrough improves super-resolution microscopy for biological imaging applications.

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Area of Science:

  • Super-resolution microscopy
  • Biophysics
  • Cell biology

Background:

  • MINFLUX microscopy provides high precision but has a limited field of view.
  • Extracting precise localization information from widefield images remains a challenge.

Purpose of the Study:

  • To develop a method for enhanced single-molecule localization precision within a micrometer-sized field of view.
  • To improve super-resolution imaging capabilities for biological samples.

Main Methods:

  • Combined centroid estimation with illumination pattern-induced photon count variations.
  • Utilized a conventional widefield imaging setup.
  • Applied DNA-PAINT and STORM imaging techniques on DNA-origami nanostructures and cellular tubulin.

Main Results:

  • Achieved a near two-fold improvement in localization precision compared to standard methods.
  • Demonstrated enhanced precision with equivalent photon counts.
  • Successfully applied the method to both purified nanostructures and complex cellular environments.

Conclusions:

  • The developed method significantly enhances single-molecule localization precision in widefield microscopy.
  • This approach overcomes field-of-view limitations of techniques like MINFLUX.
  • Offers a promising advancement for high-resolution biological imaging.