An electron microscopic study of intra-erythrocytic stages of Babesia bovis in the brain capillaries of infected splenectomized calves

dc.contributor.authorPotgieter, F.T.
dc.contributor.authorEls, H.J.
dc.contributor.editorBigalke, R.D.
dc.contributor.editorMorren, A.J.
dc.contributor.editorVerster, Anna J.M.
dc.contributor.editorVerwoerd, Daniel Wynand
dc.contributor.editorWalker, Jane B.
dc.contributor.editorCameron, Colin McKenzie
dc.contributor.editorGilchrist, Frances M. C.
dc.contributor.otherSteyn, P.J.J.
dc.date.accessioned2016-07-06T12:55:51Z
dc.date.available2016-07-06T12:55:51Z
dc.date.created2016
dc.date.issued1979
dc.descriptionThis article has been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-Format.en_ZA
dc.description.abstractSplenectomized vaccine donor calves undergoing primary reactions to Babesia bovis infections may develop cerebral babesiosis which leads to death if not treated in time. A brain biopsy was performed on an artificially-infected animal showing nervous symptoms and the tissue was immediately processed for electron microscopic examination. Virtually every erythrocyte in the brain capillaries sectioned was infected with B. bovis. Intra-erythrocytic merozoites, trophozoites and dividing trophozoites were identified. Important features of the piriform merozoites included a reduced apical complex consisting of the anterior polar ring, microtubules, rhoptries and micronemes. Unidentified membrane-bound bodies, mostly spherical in shape, were observed anterior to the nucleus. The trophozoites showed very little structural differentiation and no food vacuoles or micropores could be detected. Each trophozoite produced 2 identical merozoites and the parent cell became totally incorporated in the daughter merozoites in the multiplication process. Projections were seen radiating from the surface of infected erythrocytes which appeared to adhere to other surfaces on contact. This probably resulted in the sludging of infected erythrocytes in the capillaries. The latter observations coincide with those described for Babesia argentina.en_ZA
dc.identifier.citationPotgieter, FT & Els, HJ 1979, 'An electron microscopic study of intra-erythrocytic stages of Babesia bovis in the brain capillaries of infected splenectomized calves’, Onderstepoort Journal of Veterinary Research, vol. 46, no. 1, pp. 41-49.en_ZA
dc.identifier.issn0330-2465
dc.identifier.urihttp://hdl.handle.net/2263/53880
dc.language.isoenen_ZA
dc.publisherPublished by The Government Printer, Pretoriaen_ZA
dc.rights©1979 ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©2016 University of Pretoria Department of Library Services (digital).en_ZA
dc.subjectVeterinary medicineen_ZA
dc.subject.lcshVeterinary medicine -- South Africa
dc.titleAn electron microscopic study of intra-erythrocytic stages of Babesia bovis in the brain capillaries of infected splenectomized calvesen_ZA
dc.typeArticleen_ZA

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