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Cytokine genes in fish -- Environmental effects on the ontogeny of non-specific and specific defenses in turbot larvae -- Antibacterial proteins in skin mucus from rainbow trout -- Interferon-induced genes in the rainbow trout -- IPN recombinant vaccines -- DNA vaccination during low temperature and...
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Physiological, immunological and biochemical parameters of blood and mucus, as well as skin histology, were compared in 3 salmonid species (rainbow trout Oncorhynchus mykiss, Atlantic salmon Salmo salar and coho salmon O. kisutch) following experimental infection with sea lice Lepeophtheirus salmoni...
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Congenital Anomalies of the Kidney and Urinary Tract (CAKUT) are a polymorphic group of clinical disorders comprising the major cause of renal failure in children. Included within CAKUT is a wide spectrum of developmental malformations ranging from renal agenesis, renal hypoplasia and renal dysplasi...
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Lepeophtheirus salmonis is capable of causing severe damage to Atlantic salmon and this study was conducted to examine the physiological response of salmon to the stress of sea lice infestation. Smoltified salmon were acclimatized in 30% saltwater and exposed to high levels of lice infestation. The ...
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Studies on the microanatomy of the mucus-rich biofilm surface of normal or damaged teleost skin tissue have been limited because conventional fixation regimes do not effectively retain mucus during tissue preparation. A non-aqueous fixation method, based on a technique devised to retain airway mucou...
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Domoic acid (DOM), the toxin involved in amnesic shellfish poisoning, was presented to live mussels (at 5 degree C, 28 ppt) in dissolved form (125 nM) and as food encapsulated in liposomes. Less than 1% of dissolved DOM and up to 6% of food-borne DOM was incorporated into mussel tissues. DOM absorbe...
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Crenosoma vulpis and Eucoleus aerophilus are nematode parasites that can cause verminous pneumonia in wild carnivores. There is a paucity of information regarding the distribution of parasites in the lungs and the relationship between histopathological and parasitological diagnoses in naturally infe...
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Domoic acid is a neurotoxic amino acid responsible for an outbreak of human food poisoning in late 1987 following consumption of contaminated blue mussels (Mytilus edulis L.) from eastern Prince Edward Island, Canada. In vitro techniques were used to examine the uptake of domoic acid by digestive gl...
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Glutamic acid (GA) and kainic acid (KA) are structurally related to domoic acid (DOM), a neurotoxic amino acid that caused human food poisoning in 1987, following consumption of toxic mussels (Mytilus edulis ) from Prince Edward Island, Canada. To study the difference in response of mussels to a phy...
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OBJECTIVE: To determine the acute anti-inflammatory effects of topically applied emu oil. ANIMALS: 96 male CD-1 mice assigned randomly to 4 groups, each comprising 24 mice. PROCEDURE: To induce auricular inflammation, 50 microl of a solution comprising 10 microl of croton oil dissolved in 1 ml of ac...
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Domoic acid is a neurotoxic amino acid responsible for an outbreak of human food poisoning in late 1987 following consumption of contaminated blue mussels (Mytilus edulis L.) from eastern Prince Edward Island, Canada. In vitro techniques were used to examine the uptake of domoic acid by digestive gl...
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Juvenile rainbow trout were exposed to therapeutic concentrations of formalin or chloramine-T to assess the effects of these chemicals on the morphology of the piscine epidermis and its mucous coat. Repeated treatment, once weekly for 4 weeks, with either chemical did not affect the mucous coat of t...
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Industrial depuration may provide a means of removing domoic acid toxin from blue mussels (Mytilus edulis ). Mussels containing up to 50 mu g domoic acid/g were transported from a Prince Edward Island estuary into controlled laboratory conditions to test the effects of temperature, salinity, mussel ...
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The toxin-producing diatom Nitzschia pungens Grunow forma multiseries Hasle from three toxic blooms in two Prince Edward Island estuaries, spanning 1987-89, was studied using light and electron microscopy. Cell ultrastructure of N. pungens is, in general, similar to that of other species of Nitzschi...
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Susceptibility to different diseases among related species, such as coho salmon (Oncorhynchus kisutch), rainbow trout (Oncorhyncus mykiss) and Atlantic salmon (Salmo salar), is variable. The prominence of these species in aquaculture warrants investigation into sources of this variability to assist ...
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Caprine hemal nodes were studied by transmission electron microscopy after glutaraldehyde fixation and epoxy resin embedding. Hemal node macrophages were observed to be engaged in erythrophagocytosis. In the early stages of endocytosis, intact erythrocytes were contained in some of the heterophagic ...
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A fixative composed of 1% w/v osmium tetroxide dissolved in a fluorocarbon (FC-72) was used to perfusion-fix rat blood vessels for this ultrastructural study. With non-aqueous fixation, the lumenal surfaces of endothelial cells in cardiac and skeletal muscles retained an extracellular coat which was...
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A syndrome characterized by anemia, erythrocyte dyscrasia, low body weight, and hypothyroidism was observed in 8 llamas (Lama glama). At initial examination (1 to 23 months of age; median, 7.5 months), llamas (3 males, 5 females) were markedly underweight (29 to 55 kg; median, 36 kg) and anemic (PCV...
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Physiological and ultrastructural assessment of changes in the walls of venules in the rat cremaster muscle after administration of histamine indicates that pericytes have essential roles in the normal functioning of venules during inflammation. Fluorescein-labelled albumin was used to quantitate ma...