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The collective immunohistochemical expression of human lysozyme, human alpha-1-antitrypsin, human CD3 antigen, calf vimentin, human keratins, human lambda light chains,canine immunoglobulins IgG, IgM, and bovine protein S-100 has been analyzed on formalin-fixed, paraffin-embedded tissue sections of 25 spontaneous canine transmissible venereal tumors (CTVT)(More)
In order to determine the cause of cellular death of lymphocytes in pigs with acute African swine fever and the relationships between African swine fever virus (ASFV) and interstitial cells, ten pigs were inoculated with a highly virulent strain of ASFV (Malawi '83) and samples taken for ultrastructural study of hepatic and renal interstitial tissues. We(More)
An ultrastructural study of Kupffer cells and pulmonary intravascular macrophages (PIMs) of healthy and African Swine Fever (ASF)-infected pigs was carried out. A vascular perfusion method was performed in order to obtain an optimal intravascular morphology and tissue fixation. The infection developed acute ASF lesions in both organs. Both Kupffer cells and(More)
African swine fever is a viral disease of pigs characterized predominantly by haemorrhagic lesions. This paper reports the lesions observed in the renal interstitial capillaries of pigs inoculated with African swine fever virus strains of differing virulence: the Malawi'83 strain (haemadsorbent and highly virulent) and the Dominican Republic'78 strain(More)
African swine fever is a viral haemorrhagic disease of pigs which has been used as a model for the study of viral haemorrhagic diseases in man. The acute course of the disease is characterized by acute proliferative glomerulonephritis, with viral replication in mesangial cells and occasional focal necrosis of the renal tubular system; hyperplasia of the(More)
The pathological effect of haemorrhagic fever viruses on the kidney have not been clearly documented. This study reports glomerular lesions in African swine fever. In the acute form of the disease there was an acute diffuse proliferative glomerulonephritis, which was believed to be related to virus replication in circulating monocytes and glomerular(More)
An unusual case of poisoning by simultaneous ingestion of Echium vulgare L. and Senecio vulgaris L. in a herd of Spanish fighting bulls is described. Ten animals died from a herd of 700 in an area located in Sierra Norte, Seville (Constantina) in Spain. The interest of this case lies both in the breed affected (this is the first report on fighting bulls)(More)
The role of pulmonary intravascular macrophages (PIM) in a viral infection has been studied by structural and ultrastructural methods with two strains of the African swine fever (ASF) virus: the virulent strain E70 and the attenuated strain E75. Pulmonary intravascular macrophages were the cells of the mononuclear phagocyte system of the lung most involved(More)