Publication Date

1970

Document Type

Dissertation/Thesis

First Advisor

Starzyk, Marvin J.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Biological Sciences

LCSH

Bacteria

Abstract

Alysiella filiformis is commonly found on the epithelial cells of the oral cavity in rabbits. An ultrastructure study of these cells has shown A. filiformis attached by numerous pili to the host epithelial cells. The organism possesses a 5-layered cell wall 18-22 nm thick. Cell division occurs by cytoplasmic invagination with concurrent septum formation initiating from the dense innermost layer of the cell wall. This is followed by thickening and delamination of the septum with subsequent invagination of the outer 4 layers of the cell wall causing a partial cell separation. However, the cells of the typical trichomes are still held together by septal bridges. Mesosome-1ike structures were occasionally found and were often in the area of septum formation. Nuclear bodies were fibrous in character and often contained electron dense granular material. Cellular evaginations formed from all but the innermost cell wall layer were occasionally observed. The organism could not be grown in vitro indicating a commensalism type of relationship between the bacterium and the host.

Comments

Includes bibliographical references (pages 17-18)

Extent

28 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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