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Open AccessJournal ArticleDOI

Ultrastructural study of Mycoplasma pneumoniae in organ culture.

M H Wilson, +1 more
- 01 Jan 1976 - 
- Vol. 125, Iss: 1, pp 332-339
TLDR
The ultrastructure of Mycoplasma pneumoniae M129 was studied by using specialized staining methods for thin-section transmission electron microscopy and found that M. pneumoniae was enveloped in an extracellular mucoprotein layer that was especially concentrated around its terminal structure.
Abstract
The ultrastructure of Mycoplasma pneumoniae M129 was studied by using specialized staining methods for thin-section transmission electron microscopy. Nucleic acid was shown in the cytoplasmic granules and fibrillar material in the nuclear region. The central filament of the highly structured tip contained basic protein. With one method of fixation, parallel filaments were seen in the central core. M. pneumoniae was enveloped in an extracellular mucoprotein layer that was especially concentrated around its terminal structure.

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Citations
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Journal ArticleDOI

Mycoplasma pneumoniae and Its Role as a Human Pathogen

TL;DR: Mycoplasma pneumoniae is a unique bacterium that does not always receive the attention it merits considering the number of illnesses it causes and the degree of morbidity associated with it in both children and adults.
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A newly discovered mycoplasma in the human urogenital tract.

TL;DR: Although the data are insufficient to implicate the new mycoplasmas in human disease, the fact that they are unique, extremely fastidious, and have adherence properties, has stimulated efforts to assess their pathogenicity and possible role in human urogenital disease.
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IL-23-dependent IL-17 production is essential in neutrophil recruitment and activity in mouse lung defense against respiratory Mycoplasma pneumoniae infection.

TL;DR: It is demonstrated that IL-17/IL-17F production is IL-23-dependent in an acute Mp infection, and contributes to neutrophil recruitment and activity in the lung defense against the infection.
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Molecular basis for cytadsorption of Mycoplasma pneumoniae.

TL;DR: Characterization of HA+ virulent and HA- avirulent strains of M. pneumoniae by one- and two-dimensional polyacrylamide gel electrophoresis suggests that identified groups of mycoplasma proteins regulate the physical arrangement of P1 and the ultrastructure of the terminus, thus influencing adherence to the respiratory epithelium and virulence.
Journal ArticleDOI

Mycoplasma pneumoniae infection: role of a surface protein in the attachment organelle

TL;DR: Attachment of Mycoplasma pneumoniae to host cell by means of a specialized terminus initiates infection and monoclonal antibodies to a surface protein (Pl) inhibit this process, and react with a region of the tip covered with peplomer-like particles.
References
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Journal ArticleDOI

Ruthenium red and violet. I. Chemistry, purification, methods of use for electron microscopy and mechanism of action

TL;DR: The results indicate that ruthenium red, as a hexavalent cation, precipitates a large variety of polyanions by ionic interaction, and that its classical reaction with pectin is typical rather than specific.
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Ruthenium red and violet. II. Fine structural localization in animal tissues.

TL;DR: Ruthenium red stains intracellular lipid droplets revealing lamellae, and stains myelin forms grown from crude egg lecithin but cannot penetrate deeply, and is localized in extracellular materials which have an important mechanical function.
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Fine structural and cytochemical analysis of the staining of synaptic junctions with phosphotungstic acid.

TL;DR: The data suggest that a protein with marked affinity for E-PTA is situated at sites of specialized interneuronal contact and that this material is distinct from the plasma membranes of the contacting processes.
Journal ArticleDOI

The structural basis of ciliary bend formation. Radial spoke positional changes accompanying microtubule sliding.

TL;DR: In this paper, the authors used the radial spokes which join the A subfiber of each doublet to the central sheath as markers of microtubule alignment to measure sliding displacements directly.
Journal ArticleDOI

New fixation for biological membranes using tannic acids

TL;DR: Tannic acid precipitates with polypeptides and proteins, and aldehyde makes bridges between them, and the precipitate of "protein-tannic Acid-heavy metal-complex" is fixed in the tissues and, it gives the high electron opacity corresponding to the site of proteins.
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