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The multilobular tumor of bone (MTB) is considered as a slow-growth malignant tumor, which generally occurs on the cranium and facial bones of dogs, although it has been reported in other domestic animals. This study presents two cases of MTB in dogs. The first case was manifested in an 8-year-old m...
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Current understanding of the etiopathogenesis of infectious salmon anemia (ISA) virus (ISAV) infection in fish comes mostly from virus detection in homogenized tissues taken from ISA-suspected mortalities. This study combined in situ hybridization (ISH) and histology to demonstrate viral RNA transcr...
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Routine laboratory diagnosis of infectious salmon anaemia virus (ISAV) infection is primarily by reverse transcription polymerase chain reaction (RT-PCR) because of the high sensitivity and rapid turnaround time of the test. This paper describes methods for highly reproducible absolute viral load me...
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A sebaceous gland carcinoma was diagnosed in an adult African hedgehog (Atelerix albiventris). The neoplasm,was localized in the subcutis of the cervicall region and extendend towards the axilar region and along the thorax. The animal was admitted for surgical removal of the tumor but died during th...
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A reverse transcription-polymerase chain reaction (RT-PCR) assay for the detection of avian pneumovirus (APV), Colorado strain (US/CO), was evaluated for sensitivity and specificity. The single-tube RT-PCR assay utilized primers developed from the matrix (M) gene sequence of the US/CO APV. The RT-PC...
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Objectives: Methods: Results: Conclusions: The aim of this study was to investigate the feasibility and efficacy of antisense-mediated gene silencing by peptide nucleic acid (PNA) for specific inactivation of the CmeABC multidrug efflux transporter in Campylobacter jejuni.PNA was designed to bind to...
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Moritella viscosa is the causative agent of winter ulcer disease in salmonids reared in North-Atlantic countries. In this study the effects of selected M. viscosa antigens on cytotoxicity and pro-inflammatory gene expression in an Atlantic salmon (Salmo salar Linnaeus) macrophage-like cell line (SHK...
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The presence of dendritic cells in fish is studied with immunohistochemistry using a commercially available antibody developed against Langerin/CD207 present in human Langerhans cells. Langerin/CD207, a protein known to be associated with the development of Birbeck granules in human and murine syste...
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A free-ranging adult female red-tailed hawk died suddenly after 3 weeks in rehabilitation for a radial fracture. Cause of death was septic thrombosis from a chronic bacterial valvular endocarditis, probably associationed with injury at the fracture site. The challenge of clinical diagnosis of sepsis...
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A 2-year old gelding was referred for evaluation of severe right forelimb lameness. The horse was grade 4/5 lame on the right forelimb. Clinical, laboratory, and radiographic findings were consistent with septic arthritis and osteomyelitis. Due to poor prognosis the owner elected euthanasia. Histopa...
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288 mice were divided into four groups and exposed to aerosols of P. haemolytica or S. aureus in four replicates. The numbers of bacteria were determined in the trachea and lungs of mice killed 0, 2, 4, 8, 12, 24, 48 and 72 hours after exposure. Bacterial deposition was greater in lungs than in trac...
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Stunting syndrome is an enteric disease of young turkeys that results in reduced growth (stunting) of poults and impaired feed efficiency. A virus, which has been termed the stunting syndrome agent (SSA), causes stunting syndrome. In this study passive immunity was evaluated as a method of protectin...
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The prevalence of Giardia duodenalis, Cryptosporidium spp. and other intestinal parasites was determined in dogs <1 year old from Prince Edward Island, Canada. Fecal samples were collected from the local animal shelter (n=62), private veterinary clinics (n=78) and a pet store (n=69). Intestinal para...
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The effect of reduced feed ration on infestation levels with the sea louse Lepeophtheirus salmonis and gene expression in juvenile pink salmon Oncorhynchus gorbuscha was tested in three laboratory trials. Body weight was significantly lower among fish on the reduced ration for 27, 34, or 65 d than f...
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The relationship between acute pulmonary cell injury and inflammatory response was investigated in rats killed 1, 3, and 7 days after tracheal inoculation with bacterial lipopolysaccharide (LPS). Inoculation with LPS induced an influx of polymorphonuclear leukocytes (PMN) and a mild increase in pulm...
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Human campylobacterosis is one of the most commonly occurring types of bacterial food poisoning in the United States and other developed countries. Most human cases are due to Campylobacter jejuni that is commonly found in the gastrointestinal tract of chickens. The twin-arginine translocase (TAT) s...
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A mortality event primarily affecting freshwater drum Aplodinotus grunniens was noted during April and May 2005 in the Bay of Quinte, Lake Ontario, Canada. A conservative estimate of the number of dead drum was approximately 100 metric tonnes. Large numbers of dead round goby Neogobius melanostomus ...
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A field trial was conducted to measure differences in performance between selenium-supplemented and nonsupplemented heifers on a 1200-cow California dairy. 117 19- to 27-month-old Holstein heifers were randomly assigned to treatment (n = 59) and control (n = 58) groups. A federally approved, commerc...
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A colorimetric assay employing MTT (3-[4,5-dimethylthiazole-2-yl], 2-5-diphenyltetrazolium bromide) was used to determine the mitogenic response of intestinal intraepithelial lymphocytes (i-IELs) of chickens to T- and B-cell mitogens. Comparisons between mitogenic responses of i-IELs and peripheral ...
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Quorum sensing is a type of bacterial communication mediated by chemical signaling molecules called autoinducers (AIs). The production of AI-2 and AI-3 is dependent on the luxS gene in Escherichia coli O157:H7. A luxS mutation caused a minimal decrease (about 2-fold) in Shiga toxin (Stx) production ...
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Five continuous cell lines, swine testicular (ST), human rectal tumour (HRT 18), fetal rhesus monkey kidney (MA104), bovine turbinate (BT), and quail tracheal (QT35), were evaluated and compared with chick embryo fibroblasts (CEFs) for their ability to propagate B1 or Texas GB strains of Newcastle d...