Myer, M.S.Garnett, H.M.Bigalke, R.D.2014-11-172014-11-1720141987Myer, MS, Verwoerd, DW & Garnett, HM 1987, 'Production of a macrophage chemotactic factor by cultured jaagsiekte tumour cells’, Onderstepoort Journal of Veterinary Research, vol. 54, no. 1, pp. 9-15.0330-2465http://hdl.handle.net/2263/42622The 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.The increase of alveolar macrophages in jaagsiekte sheep lungs is not caused by excessive surfactant production but is due to a chemotactic factor secreted by the tumour cells. This factor has a molecular mass in the region of 13 kilodaltons, is stable at 56 °C but labile at 100 °C and, being sensitive to proteases, indicates that it is a small protein molecule.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