Results 141 to 150 of about 3,570 (200)
, 2001 El maedi o neumonía progresiva ovina es la principal manifestación clínica de la infección por el virus maedivisna. Aunque la enfermedad se conocía desde antiguo en varios países (Zwoegerziekte, bouhite, ovine progressive pneumonia, etc.), sólo su entrada y rápida expansión en Islandia durante los años treinta generó el interés científico y práctico ...
Juste, J. A., Concha, A. De la
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Experientia, 1990 The polymerase chain reaction (PCR) was used to demonstrate proviral DNA of lentiviruses of small ruminants in cultured cells. Primers for the Taq polymerase were selected in the GAG gene of Icelandic maedi-visna virus and POL gene of caprine arthritis ...
E Peterhans, R Zanoni
exaly +2 more sources
Maedi–Visna virus infection in sheep. History and present knowledge
Comparative Immunology, Microbiology and Infectious Diseases, 2004 Briefly the history of maedi–visna and the major clinical symptoms are described. Examples are presented to demonstrate that the genetic composition of a breed determines whether or not sheep become sick after an infection with maedi–visna virus (mvv) or
Straub, Otto
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Veterinary Record, 1980
A brief history of the occurrence of maedi/visna or maedi/visna related diseases is given. The clinical features and diagnosis are described. Recent experimental work performed in an attempt to resolve the pathogenetic features of slowness and persistence of infection, characteristic of maedi/visna, is covered.
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A brief history of the occurrence of maedi/visna or maedi/visna related diseases is given. The clinical features and diagnosis are described. Recent experimental work performed in an attempt to resolve the pathogenetic features of slowness and persistence of infection, characteristic of maedi/visna, is covered.
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Veterinary Record, 1987
In most cases, maedi-visna virus infection is characterised by a subclinical, persistent virus-carrier state. However, in heavily infected flocks, economically significant disease does occur, mainly apparent as ill-thrift and chronic respiratory disease (maedi) in older ewes and as an indurative mastitis, which can result in delayed weight gain of ...
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In most cases, maedi-visna virus infection is characterised by a subclinical, persistent virus-carrier state. However, in heavily infected flocks, economically significant disease does occur, mainly apparent as ill-thrift and chronic respiratory disease (maedi) in older ewes and as an indurative mastitis, which can result in delayed weight gain of ...
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The biology of maedi-visna virus—An overview
British Veterinary Journal, 1993This review aims to summarize the current understanding of the biology of maedi-visna virus (MVV), the prototype virus of the family lentivirinae. The paper provides a short overview of the historical background to the discovery of MVV. Detailed descriptions of the structure and organization of the MVV genome and of the virion encoded polypeptides are ...
N, Carey, R G, Dalziel
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Immune response to maedi-visna virus
Frontiers in Bioscience, 2007The ovine maedi-visna virus (MVV) was the first lentivirus to be isolated and characterized 1957 in Iceland. MVV leads to a life-long, persistent infection with slow development of lesions in the lung and the central nervous system (CNS). The main target cells of MVV are of the monocyte/macrophage lineage and it does not infect T-lymphocytes or cause ...
Sigurbjorg, Torsteinsdottir +3 more
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Studies in epidemiology of maedi/visna in sheep
Research in Veterinary Science, 1979Lambs born to ewes from flocks with a high incidence of maedi/visna were separated from their dams at birth (group 1), or after 10 h (group 2), six weeks (group 3) or one year (group 4) and were observed for periods of up to eight years. Group 1 lambs remained free of infection while 28 per cent, 76 per cent and 81 per cent respectively of lambs in the
G F, De Boer +3 more
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