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Related Experiment Videos

Embedding method for electron microscopy in biology.

H Kushida

    The Tokai Journal of Experimental and Clinical Medicine
    |December 1, 1985
    PubMed
    Summary

    Early electron microscopy required thin sections for observing cell structures. Researchers overcame embedding challenges using a double-embedding method with Parlodion and paraffin wax for improved sample preparation.

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    Area of Science:

    • Cell Biology
    • Microscopy Techniques

    Background:

    • Transmission electron microscopes (TEM) became available in the late 1930s.
    • Initial cell and tissue internal structure studies used light microscopy sectioning methods.
    • Paraffin waxes proved unsuitable as embedding media due to excessive softness.

    Purpose of the Study:

    • To investigate effective methods for preparing thin sections for early electron microscopy.
    • To address the limitations of existing embedding media for high-resolution imaging.

    Main Methods:

    • Testing various embedding media for sectioning suitability.
    • Development and application of a double-embedding technique.
    • Utilizing "Parlodion" plastic in conjunction with paraffin wax.

    Main Results:

    • Paraffin wax alone was too soft for achieving the required thin sections.
    • The double-embedding method using Parlodion and paraffin wax demonstrated early success.
    • This method enabled improved sectioning for electron microscopic observation.

    Conclusions:

    • The double-embedding technique was a significant advancement in early electron microscopy sample preparation.
    • Overcoming embedding medium limitations was crucial for visualizing cellular ultrastructure.
    • This method paved the way for more detailed cellular and tissue analysis using TEM.

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