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Related Experiment Videos

Special specimen preparation methods for image processing in transmission electron microscopy: a review.

R W Horne

    Journal of Microscopy
    |August 1, 1978
    PubMed
    Summary

    Researchers review in vitro formation of viral crystalline arrays. This technique enhances image analysis in electron microscopy for studying virus assembly and dissociation.

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    The in vitro crystalline formations of turnip rosette virus. I. Electron microscopy of two- and three-dimensional arrays.

    Virology·1977

    Area of Science:

    • Quantitative electron microscopy
    • Biophysical imaging techniques

    Background:

    • Image analysis of electron micrographs is crucial for quantitative microscopy.
    • Current methods often analyze isolated biological structures with negative stains.
    • Limited naturally occurring specimens exhibit crystalline features suitable for high-resolution analysis.

    Purpose of the Study:

    • To review in vitro formation of crystalline and paracrystalline arrays from purified viruses.
    • To discuss challenges in preparing 2D and 3D crystalline arrays.
    • To explore extending negative staining for studying viral component dynamics.

    Main Methods:

    • In vitro formation of crystalline and paracrystalline arrays from purified isometric, filamentous, and rod-like viruses.
    • Application of optical and computer imaging methods to electron micrographs.

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  • Utilizing negative staining with carbon film techniques.

    • Main Results:

    • Successful in vitro formation of ordered viral arrays from various virus types.
    • Identification of preparative challenges for producing 2D and 3D crystalline structures.
    • Demonstrated potential for studying dynamic viral assembly/dissociation processes.

    Conclusions:

    • In vitro formation of viral crystalline arrays offers a viable alternative to limited natural specimens.
    • Advanced image processing techniques can be applied to these arrays for detailed structural analysis.
    • The negative staining-carbon film method can be adapted to observe dynamic viral processes.