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Updated: Sep 6, 2026

Correlative Light and Electron Microscopy to Study Microglial Interactions with β-Amyloid Plaques
Published on: June 1, 2016
Light and electron microscope studies of mycobacterium--mycobacteriophage interactions. III. Further studies on the
Abstract:
The process of multiplication of mycobacteriophage B-1 in its host cell was studied by means of an improved technic of ultrathin sectioning. The appearance of the nuclear apparatus was not altered throughout the latent period. Phage-shaped dense particles appeared about 30 minutes after infection in less dense areas neighboring the nuclear apparatus and occasionally at the margin of the nuclear apparatus. The less dense areas, which may correspond to the phage multiplication foci according to the authors' interpretation, were not filled with such arrays of fine-stranded fibrils as are seen in the nuclear apparatus. Empty phage heads could frequently be seen within and outside the lysed cells, along with the mature phage particles, at the end of the latent period. Moreover, it was indicated that empty head membranes may possibly exist within the cells during the latent period
Insights
Researchers studied mycobacteriophage B-1 multiplication using ultrathin sectioning. New phage particles emerged near the host cell
Area of Science:
- Microbiology
- Virology
- Cell Biology
Background:
- Mycobacteriophages are viruses that infect mycobacteria.
- Understanding viral replication is crucial for controlling mycobacterial infections.
Purpose of the Study:
- To investigate the replication process of mycobacteriophage B-1 within its host cell.
- To characterize the morphological changes during phage multiplication.
Main Methods:
- Utilized an improved ultrathin sectioning technique for electron microscopy.
- Observed host cell and phage particle morphology throughout the infection cycle.
Main Results:
- The host cell's nuclear apparatus remained unchanged during the latent period.
- Phage-shaped particles appeared approximately 30 minutes post-infection in specific cellular regions.
- Mature and empty phage heads were observed at the end of the latent period.
Conclusions:
- Mycobacteriophage B-1 replication involves the formation of new particles in distinct areas of the host cell.
- Empty phage head structures may be present within the host cell during the latent period.
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