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Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain
05:51

Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain

Published on: July 24, 2016

Intracellular forms of meningopneumonitis virus

W H GAYLORD

    The Journal of Experimental Medicine
    |December 1, 1954
    PubMed

    Insights

    Electron micrographs reveal distinct particle types of mnegopneumonitis virus, suggesting a complex life cycle. These forms indicate the virus may reproduce via binary fission or endosporulation, with elementary bodies acting as a spore-like stage.

    Area of Science:

    • Virology
    • Microbiology
    • Cell Biology

    Background:

    • Intracellular pathogens present diverse morphological forms during their life cycles.
    • Understanding viral morphology is crucial for elucidating replication mechanisms.

    Purpose of the Study:

    • To characterize the different particle morphologies of mnegopneumonitis virus observed via electron microscopy.
    • To infer the viral life cycle and replication strategies based on observed particle forms.

    Main Methods:

    • Transmission electron microscopy was used to examine intracellular mnegopneumonitis virus particles.
    • Morphological analysis focused on particle size, density, internal structures, and membrane characteristics.

    Main Results:

    • Five distinct particle types were identified: elementary bodies, intermediate forms, small circles, larger circles, and larger structures.
    • Elementary bodies are dense, 250-300 µm with central granules.
    • Intermediate forms are larger (300-400 µm) with central granules and multiple limiting zones; circles range from 400-600 µm with varying internal structures; larger structures exhibit membrane discontinuities.

    Conclusions:

    • The observed particle morphologies suggest mnegopneumonitis virus replicates through binary fission or multiple endosporulation.
    • Elementary bodies are hypothesized to represent a spore-like stage in the viral life cycle.
    Keywords:
    MICROSCOPY, ELECTRONMIYAGAWANELLA

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