Broekman, J.Eksteen, P.A.L.Verwoerd, Daniel WynandBigalke, R.D.Cameron, Colin McKenzieGilchrist, Frances M.C.Morren, A.J.Verster, Anna J.M.Verwoerd, Daniel WynandWalker, Jane B.De Kock, V.E.2016-07-062016-07-0620161977Broekman, J, Eksteen, PAL & Verwoerd, DW 1977, 'Immunosuppression in new-born lambs’,Onderstepoort Journal of Veterinary Research, vol. 44, no. 3, pp. 151-156.0330-2465http://hdl.handle.net/2263/53699The 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.A novel technique, based on cytotoxicity-neutralization, was developed for the in vitro titration of anti-sheep lymphocyte and anti-sheep macrophage sera. The titres obtained for a number of antisera were compared with those found in an agglutination assay. Anti-lymphocyte sera with a high cytotoxicity-neutralization titre very effectively suppressed the number of circulating lymphocytes the peripheral blood of treated new-born lambs, thus indicating in vivo immunosuppressive activity.en© 1977 ARC – Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © 2016 University of Pretoria. Department of Library Services (digital).LambsImmunosuppressionVeterinary medicine -- South AfricaArticle