Howell, P.G.Verwoerd, Daniel WynandOellermann, R.A.Jansen, B.C.2016-07-062016-07-0620161967Howell, PG, Verwoerd, DW & Oellermann, RA 1967, 'Plaque formation by bluetongue virus’, Onderstepoort Journal of Veterinary Research, vol. 34, no. 2, pp. 317-32.0330-2465http://hdl.handle.net/2263/53859The journals have been scanned in colour with a HP 5590 scanner; 600 dpi. Adobe Acrobat v.11 was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.The formation of plaques in a line of mouse fibroblast cells under agarose, by 16 tissue culture and 14 egg adapted strains of bluetongue virus is described. Optimal conditions for routine plaque assay were determined and certain basic requirements substantiated. The technique was used to determine the thermal stability of the virus under various conditions and in selected biological stabilizers.en© 1967 ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © 2016 University of Pretoria. Dept. of Library Services (digital).Veterinary medicineBluetongue virusVeterinary medicine -- South AfricaArticle