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Related Experiment Videos

[Electron microscopic observations on Bacteroides thetaiotaomicron].

N M Xie, S Q Tong, L P Wang

    Wei Sheng Wu Xue Bao = Acta Microbiologica Sinica
    |April 1, 1989
    PubMed
    Summary

    Three strains of Bacteroides thetaiotaomicron were isolated from SPF mice. Electron microscopy revealed unique cellular structures, including a nucleoid and secreted lamellar corpuscles, with unknown functions.

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    Area of Science:

    • Microbiology
    • Microbial Ultrastructure

    Context:

    • Bacteroides thetaiotaomicron is a key gut commensal bacterium.
    • Previous isolation and identification of these strains occurred in 1987.
    • This study focuses on the ultrastructural observations via electron microscopy.

    Purpose:

    • To characterize the ultrastructure of three isolated strains of Bacteroides thetaiotaomicron using electron microscopy.
    • To identify and describe novel cellular components observed under scanning electron microscopy (SEM) and transmission electron microscopy (TEM).

    Summary:

    • Three strains of Bacteroides thetaiotaomicron were isolated from SPF BALB/c-nu/+ mice caeca.
    • SEM revealed unstained rod areas as concavities, identified as nucleoids under TEM.
    • TEM identified numerous lamellar corpuscles within the cell plasma, with some being secreted extracellularly.

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    Impact:

    • Provides detailed ultrastructural insights into Bacteroides thetaiotaomicron.
    • Highlights the presence of previously undescribed cellular structures and extracellular components.
    • Opens avenues for future research into the chemical properties and physiological functions of these novel corpuscles.