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Related Experiment Videos

A new technique for cross sectioning free hairs.

M C Pepper, S D Lantis

    The Journal of Investigative Dermatology
    |February 1, 1977
    PubMed
    Summary

    A new Araldite embedding method provides rigid hair specimen sectioning, preventing distortion. This technique allows for precise cross-sections of hair shafts for detailed analysis.

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    Area of Science:

    • Materials Science
    • Forensic Science
    • Microscopy

    Background:

    • Traditional paraffin embedding for hair shaft sectioning can lead to compression artifacts.
    • Distortion of hair shaft morphology hinders accurate microscopic examination.

    Purpose of the Study:

    • To introduce a novel embedding technique for hair specimens using Araldite.
    • To overcome the limitations of compression and distortion inherent in conventional methods.

    Main Methods:

    • Hair specimens were embedded using Araldite, a more rigid medium than paraffin.
    • Semithin sections were prepared perpendicular to the hair shaft axis.
    • Phase contrast optics were utilized for examining the prepared sections.

    Main Results:

    • The Araldite embedding medium prevented compression artifacts during sectioning.
    • Accurate cross-sections of hair shafts were obtained by correlating with longitudinal position.
    • Detailed examination of various hair types became feasible without structural distortion.

    Conclusions:

    • Araldite embedding offers superior rigidity for hair specimen sectioning compared to paraffin.
    • This method ensures the integrity of hair shaft morphology for accurate analysis.
    • The technique facilitates precise cross-sectional examination of diverse hair types.

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