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A system for a reproducible in vitro restimulation of bovine viral diarrhea virus (BVDV)-specific cytotoxic T-cells (CTL) was developed. Lymphocyte cultures of BVDV-immunised cattle were stimulated with infectious BVDV isolate PT810 and recombinant bovine interleukin-2 for 12 to 25 days. A specific
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Bovine fetal lung tissue culture cells were infected with bovine viral diarrhea virus. The cells released substances into the supernatant fluid that suppressed the proliferative response of bovine peripheral blood mononuclear cells which had been stimulated with concanavalin A. Activity could be
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Pig epizootic diarrhea virus cannot be grown in cell culture; for its characterization, intestinal perfusate material from a pig infected with the strain CV777 had to be used. In isopyknic sucrose gradients, a peak of virus-specific ELISA activity was detected at a density of 1.17 g/ml. Using
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Cattle persistently infected with bovine viral diarrhea (BVD) virus have decreased neutrophil and lymphocyte functions. We reevaluated these functions and further characterized the inhibition of persistent BVD virus infection in neutrophils, using sensitive kinetic assays. In addition, the influence
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The binding of ShigeUa dysenteriae 1 cytotoxin to HeLa cells in culture and to isolated rat liver cell membranes was studied by means of an indirect consumption assay of toxicity from the medium, or by determination of cytotoxicity to the HeLa cell monolayer. Both liver cell membranes and HeLa cells
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Twenty-six patients with severe rheumatoid arthritis who had completed a randomized crossover trial of methotrexate elected to continue to receive the drug in a long-term prospective study. At 36 months, 16 patients remained in the study. Over this period of time, significant improvement was noted
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Whipple's disease (WD) is a rare systemic disease caused by infection with the recently identified actinomycetes, Tropheryma whippelii. The disorder affects mostly middle-aged men, and the major clinical features are weight loss, arthropathy, and diarrhea; other symptoms, caused by systemic
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Lymphocyte numbers and activities were evaluated at 2, 4, 8 and 12 weeks of age in two calves with lethal trait A46 (A46), a genetic disorder affecting intestinal zinc absorption. Plasma zinc concentrations declined to subnormal by 3 weeks of age, after which anorexia, diarrhea, alopecia and
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Classical swine fever virus and bovine virus diarrhea virus are members of the genus pestivirus, which belongs to the family of the Flaviviridae. Recently, envelope glycoprotein Erns was identified as an RNase. RNases can express different biological actions. They have been shown to be neurotoxic,
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Simian acquired immunodeficiency syndrome (SAIDS) was transmitted to four of four rhesus macaques with blood from rhesus macaques naturally infected with a type D retrovirus, simian retrovirus-2 (SRV-2). Three of the four blood recipients died with SAIDS at 13, 15, and 26 weeks postinoculation. The
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CHARGE syndrome is a rare congenital malformation syndrome which may share symptoms with DiGeorge syndrome. Complete DiGeorge syndrome (cDGS) is a severe form of DiGeorge syndrome, characterized by a CD3+ T-cell count of <50/mm3 due to athymia, and is fatal without immunologic
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Mycobacterium avium subsp. paratuberculosis infection of cattle results in a chronic granulomatous enteritis. Clinical disease (i.e., cachexia, diarrhea, and high fecal bacterial counts) is preceded by a lengthy subclinical stage of disease. The immunologic mechanisms associated with the progression
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This case report describes a 3-year-old American Quarter Horse with acquired immunodeficiency. Clinical signs included chronic diarrhea due to Salmonella typhimurium and bacterial pneumonia. Characterization of the immunodeficiency involved in vivo phytohemagglutinin (PHA) intradermal testing, in
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The role of a novel "small round virus" (SRV) isolated from poult enteritis and mortality syndrome (PEMS) cases in inducing PEMS and associated immune alterations was examined in this study. Specific-pathogen-free and conventional poults were orally challenged with SRV and/or turkey coronavirus and
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