Abstract
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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Acknowledgements
This work is supported by in part by the US National Institutes of Health, the Defense Advance Research Projects Agency and a Packard Science and Engineering Fellowship (to X.Z.). X.Z. is a Howard Hughes Medical Institute Investigator.
Author information
Author notes
- Michael J Rust
- & Mark Bates
These authors contributed equally to this work.
Affiliations
Department of Physics, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
- Michael J Rust
- & Xiaowei Zhuang
Division of Engineering and Applied Sciences, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
- Mark Bates
Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
- Xiaowei Zhuang
Howard Hughes Medical Institute, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
- Xiaowei Zhuang
Authors
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Contributions
M.J.R. and M.B. conceived the STORM imaging concept. M.J.R., DNA imaging and data analysis; M.B., RecA imaging and data acquisition. X.Z. supervised the project.
Competing interests
The authors declare no competing financial interests.
Corresponding author
Correspondence to Xiaowei Zhuang.
Supplementary information
PDF files
- 1.
Supplementary Fig. 1
Switching of Cy3-Cy5–labeled antibody.
- 2.
Supplementary Fig. 2
Localization accuracy of single switches before and after drift correction.
- 3.
Supplementary Fig. 3
Fluorescence time trace of DNA labeled with multiple switches over many STORM imaging cycles.
- 4.
Supplementary Methods
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