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. 1988 Jul;170(7):3314–3318. doi: 10.1128/jb.170.7.3314-3318.1988

Electron microscopic examination of capsular material from various serotypes of Actinobacillus pleuropneumoniae.

M Jacques 1, B Foiry 1, R Higgins 1, K R Mittal 1
PMCID: PMC211291  PMID: 3384814

Abstract

The capsular material on PPLO broth-grown cells of Actinobacillus pleuropneumoniae representing serotypes 1 to 10 was visualized by transmission electron microscopy after polycationic ferritin labeling and also after stabilization with specific antibodies. All the isolates examined were covered with a layer of capsular material whose thickness varied between 80 to 90 nm and 210 to 230 nm when examined by immunostabilization. We were also able to visualize A. pleuropneumoniae in lungs of infected pigs and to estimate the amount of capsular material covering the cells. Our results indicate that differences in capsular structure exist among the different A. pleuropneumoniae serotypes, and this result may explain in part why the serotypes are not equally virulent.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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