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Applied and Environmental Microbiology, August 2004, p. 5026-5029, Vol. 70, No. 8
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.8.5026-5029.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Two Morphological Types of Cell Appendages on a Strongly Adhesive Bacterium, Acinetobacter sp. Strain Tol 5

Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midori-ku, Yokohama 226-8501,¹ Center for Advanced Materials Analysis, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550,² Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya 466-8555, Japan³

Received 24 January 2004/ Accepted 19 April 2004

ABSTRACT

Two morphological types of appendages, an anchor-like appendage and a peritrichate fibril-type appendage, have been observed on cells of an adhesive bacterium, Acinetobacter sp. strain Tol 5, by use of recently developed electron microscopic techniques. The anchor extends straight to the substratum without branching and tethers the cell body at its end at distances of several hundred nanometers, whereas the peritrichate fibril attaches to the substratum in multiple places, fixing the cell at much shorter distances.

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