Redundancy of washing in the preparation of biological specimens for transmission electron microscopy

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Updated: Aug 12, 2026

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography
08:04

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography

Published on: March 12, 2017

C D Ockleford

    Journal of Microscopy
    |November 1, 1975
    PubMed

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    Preparation of Samples for Electron Microscopy01:20

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    To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...