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[Electron microscopic observations on Bacteroides thetaiotaomicron]
Wei Sheng Wu Xue Bao = Acta Microbiologica Sinica
|April 1, 1989
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.
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.
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.