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Dynamic autofluorescence imaging of intracellular components inside living cells using direct electron beam excitation.


ABSTRACT: We developed a high-resolution fluorescence microscope in which fluorescent materials are directly excited using a focused electron beam. Electron beam excitation enables detailed observations on the nanometer scale. Real-time live-cell observation is also possible using a thin film to separate the environment under study from the vacuum region required for electron beam propagation. In this study, we demonstrated observation of cellular components by autofluorescence excited with a focused electron beam and performed dynamic observations of intracellular granules. Since autofluorescence is associated with endogenous substances in cells, this microscope can also be used to investigate the intrinsic properties of organelles.

SUBMITTER: Nawa Y 

PROVIDER: S-EPMC3920870 | biostudies-other | 2014 Feb

REPOSITORIES: biostudies-other

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