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Ultrahigh-resolution scanning electron microscopy of biological materials
1Department of Anatomy, Faculty of Medicine, Tottori University, Yonago, Japan.
Archives of Histology and Cytology
|January 1, 1992
Summary
Ultrahigh-resolution scanning electron microscopy (SEM) requires advanced specimen preparation techniques. New methods, including CC plate and heavy metal impregnation, enable visualization of biological molecules like DNA and cell receptors.
Area of Science:
- Materials Science
- Biotechnology
- Microscopy
Background:
- The advent of ultrahigh-resolution scanning electron microscopy (SEM) in 1985 necessitated the development of novel specimen preparation methods.
- Conventional techniques proved insufficient for the enhanced resolution offered by new SEM instruments.
Purpose of the Study:
- To detail advanced specimen preparation methods for ultrahigh-resolution SEM.
- To showcase applications of these techniques in biological specimen analysis.
Main Methods:
- Detailed procedures for the CC plate method and heavy metal impregnation are described.
- Precautions for achieving optimal ultrahigh-resolution imaging are provided.
Main Results:
- Successful SEM imaging of biological specimens including complement, Clq, proteoglycan, and double-stranded DNA.
- Visualization of immunolabeled cell-surface receptors.
- Exploration of morphological identification of immunoglobulins for potential clinical applications.
Conclusions:
- Advanced specimen preparation is crucial for unlocking the full potential of ultrahigh-resolution SEM.
- These techniques offer promising avenues for research in molecular biology and diagnostics.
- Further refinement may lead to clinical utility in diagnosing allergic or infectious diseases.