Du Plessis, J.L.South Africa. Dept. of Agricultural Technical ServicesTustin, R.C.De Lange, M.Reinecke, R.K.Walker, Jane B.De Kock, V.E.2015-07-082015-07-0820131970Du Plessis, JL 1970, 'Pathogenesis of heartwater. I. Cowdria ruminantium in the lymph nodes of domestic ruminants', Onderstepoort Journal of Veterinary Research, vol. 37, no. 2, pp. 89-96.http://hdl.handle.net/2263/46330The 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 intracellular replication of Cowdria ruminantium (Cowdry, 1926) is described in reticulum cells of lymph nodes several days prior to the appearance of rickettsial colonies in vascular endothelial cells. This is suggestive of a developmental cycle of the parasite in the lymph nodes. The subinoculation of suspensions of these glands resulted in transmission of the disease.en©South Africa. Dept. of Agricultural Technical Services (original). ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary reportsSouth AfricaVeterinary medicine -- South AfricaHeartwaterTick-borne diseases in animalsArticle