Van Wyk, Jan AucampBigalke, R.D.Cameron, Colin McKenzieGilchrist, Frances M.C.Morren, A.J.Verster, Anna J.M.Verwoerd, Daniel WynandWalker, Jane B.De Kock, V.E.2016-07-062016-07-0620161977Van Wyk, JA 1977, 'A rapid method for differentiating between infective larvae of Oesophagostomum columbianum and Chabertia ovina’, Onderstepoort Journal of Veterinary Research, vol. 44, no. 3, pp. 197-199.0330-2465http://hdl.handle.net/2263/53762The articles have 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.When freshly-collected, exsheathed infective larvae of Oesophagostomum columbianum and Chabertia ovina were frozen in liquid nitrogen and subsequently thawed, conspicuous vesicles appeared in the intestinal cells of the larvae. The mean number of vesicles, which differed in size according to the species was 20 for O. columbianum and 32 for C. ovina.en© 1977 ARC – Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © 2016 University of Pretoria. Department of Library Services (digital).Veterinary MedicineVeterinary Medicine -- South AfricaArticle