Abstract
As a promising tool over the optical resolution limits, liquid electron microscopy is practically utilized to visualize the structural information on wet biological specimens, such as cells, proteins, and nucleic acids. However, the functionality of biomolecules during their observation is still controversial. Here we show the feasibility of live-cell electron microscopy using graphene veils. We demonstrate that the electron dose resistivity of live bacterial cells increases to 100-fold in graphene veils, and thus they maintain their structures and functions after electron microscopy experiments. Our results provide the guidelines and show possibilities for the electron microscopy imaging of live cells and functional biomolecules.
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