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The morphology of O. volvulus microfilaria in the northwestern onchocerciasis endemic foci, Ethiopia.

Authors
  • Zein, Z A
Type
Published Article
Journal
Ethiopian medical journal
Publication Date
Jan 01, 1992
Volume
30
Issue
1
Pages
19–21
Identifiers
PMID: 1563359
Source
Medline
License
Unknown

Abstract

Microfilariae obtained by corneoscleral biopsy machines from persons in the Humera area along the Sudan boarder in Northwestern Ethiopia were stained using hematoxylin. Morphological measurements were made using a microscope fitted with micrometer and camera, as well as map curvimeter. The mean size of microfilariae was 189 microns by 5.8 microns. The percentage of nucleifree cephalic space as percent of total body length was 3.4 and is close to reports in the literature. The measurement of the distance of the anterior end nerve ring as a percent of the total body length (22.1%) is also close to measurements obtained elsewhere. Although the microfilaria encountered in this study are of the short variety, morphological measurements and the absence of sheath suggests that the microfilaria observed belong to O. volvulus.

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