期刊
BIOPHYSICAL JOURNAL
卷 97, 期 12, 页码 3224-3228出版社
CELL PRESS
DOI: 10.1016/j.bpj.2009.09.038
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资金
- Canada Foundation for Innovation
- Natural Sciences and Engineering Research Council of Canada
We report applications of two-photon excitation fluorescence (2PEF) microscopy with subdiffraction-limit resolution for green-fluorescent-protein-tagged cell imaging. The microscope integrates 2PEF microscopy and stimulated emission depletion microscopy in one microscope that has the benefits of both techniques: intrinsic three-dimensional resolution, confined photobleaching, and subdiffraction-limit resolution. The subdiffraction-limit resolution was demonstrated by resolving green-fluorescent-protein-tagged caveolar vesicles located within a distance shorter than the diffraction limit of a regular 2PEF microscope, which is similar to 250 nm even with the best optics. The full width at half-maximum of the effective point-spread function for the 2PEF microscope was estimated to be similar to 54 nm.
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