Transmission-scanning electron microscopic observations of selected Eikenella corrodens strains.

Journal of Bacteriology
A Progulske, S C Holt

Abstract

The morphology of Eikenella corrodens 333/54-55 (ATCC 23834) and two human periodontal lesion isolates, strains 470 and 373, was examined by transmission and scanning electron microscopy. All strains exhibited a cell envelope characteristic of gram-negative bacteria. Staining with ruthenium red and alcian blue revealed a loosely organized fibrous slime layer associated with the outer surface of the outer membrane. Slime "stabilization" was achieved by incubation of cells with antisera prepared against whole cells of the Eikenella strains. The stabilized slime appeared as a thick, electron-opaque layer juxtaposed to the outer membrane. Negative staining and heavy metal shadow-casting revealed an interwoven network of fibrils approximately 4 nm in diameter. These fibrils appeared to represent subunits of a larger fibril. Scanning electron microscopy after antibody slime stabilization confirmed the presence and location of the slime layer.

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Citations

Nov 1, 1994·Journal of Periodontal Research·C M CobbR Hirschberg
Nov 11, 1999·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·T A Fassel, C E Edmiston
Jul 10, 1999·Journal of Bacteriology·M T VillarR L Hirschberg
May 1, 1993·Infection and Immunity·T TønjumC F Marrs
Sep 1, 1995·Infection and Immunity·B L Hood, R Hirschberg

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