Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa)Du Plessis, J.L.Camus, E.Oberem, P.T.Malan, LetitiaBigalke, R.D.2014-11-192014-11-1920141987Du Plessis, JL, Camus, E, Oberem, PT & Malan, L 1987, 'Heartwater serology: some problems with the interpretation of results’, Onderstepoort Journal of Veterinary Research, vol. 54, no. 3, pp. 327-329.0330-2465http://hdl.handle.net/2263/42667The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Antibodies in the sera of domestic ruminants that have been infected with Ehrlichia bovis and other ehrlichial agents cross-react with the Kümm strain of Cowdria ruminantium used in the indirect fluorescent antibody test as antigen. These cross-reactions are also shown by the Elisa test in which the Ball 3 strain of the heartwater agent is used as antigen.en©ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaHeartwater -- South AfricaArticle