Jansen, B.C.Hayes, MariannaBigalke, R.D.2015-11-052015-11-0520151984Jansen, BC & Hayes, M 1984, 'The acquisition of immunity to Histophilus ovis by sheep in nature', Onderstepoort Journal of Veterinary Research, vol. 51, no. 4, pp. 269-270.0330-2465http://hdl.handle.net/2263/50378The 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.It was demonstrated that skin wound infection with Histophilus ovis elicits an immune response which can protect a ram against a challenge injection of the same organism into its epididymis.en©ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaArticle