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Showing 1 to 18 of 18 for “"Sheep red blood cells"”.
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Genomics-Based Analysis of Antibody Response to Sheep Red Blood Cells in Chickens
… an important mechanism to fight pathogens and to reduce the incidence of diseases. Defining the molecular basis of antibody response may facilitate genetic improvement in the immune response of animals to pathogens. For almost 4 decades, antibody titers in response to challenge by sheep red blood …
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The Effects of Cyclohexylamine on Antibody Production in Rabbits
… specific antibodies to bovine serum albumin and sheep red blood cells and total number of individual hemolytic antibody forming cells in the spleen. The results were compared to rabbits which received no CHA-HCL. No difference was found between the two groups in total levels of gamma globulin and …
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Immunological Response to Clostridium perfringens in Two Genetically Divergent Lines of Chickens as Influenced by Major Histocompatibility Complex (MHC) Genotype
… for low (LA) or high (HA) antibody response to sheep red blood cells (SRBC) displayed a correlated change in major histocompatibility complex (MHC), so that LA chickens were 96% B¹³ and HA chickens were 96% B²¹. During a clinical outbreak of necrotic enteritis, B²¹B²¹ genotypes experienced …
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Reproductive Soundness and Egg Quality in Chickens Selected for Low and High Antibody Response
… for high (HAS) or low (LAS) antibody response to sheep red blood cells. The focus of this thesis was to investigate correlated responses in reproductive soundness and egg quality resulting from that selection. Forty-five hens and 25 roosters from each antibody line were used. In hens, commencement …
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Suppression of T-Helper Cell Function by a Soluble Immunosuppressive Factor From Plasmodium Berghei Infected Rat Erythrocytes
… factor (ISF) and then immunized with sheep red blood cells (SRBC) had a reduced number of plaque forming cells (PFC) as compared to mice injected with control preparations. The delayed type hypersensitivity reaction elicited by SRBC was also suppressed in mice treated with the ISF. …
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Effect of Sialylation of Histophilus somni Lipooligosaccharide on Virulence and Resistance to Host Defenses
… somni by alternative complement pathway was measured by incubation of sialylated or non-sialylated H. somni with antibody-free precolostral calf serum (PCS) followed by viable plate count. A complement dose-dependent response to killing of non-sialylated H. somni by PCS was observed. However, …
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Avaliação da atividade anti-Helicobacter pylori e citotóxica in vitro de extratos orgânicos obtidos das folhas de Encholirium spectabile e Syzygium cumini
… in vitro toxicity by a hemolytic assay using sheep red blood cells, and VERO and HeLa cells using the MTT assay to analyze cell viability. The extracts of both plant used in antimicrobial assays did not inhibit bacterial growth, however the essential oil of S. cumini (SCFO) proved effective, …
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B and T Lymphocytes in Human Pregnancy
… to fewer T-lymphocytes or a dysfunction of these cells. T cells were measured by the rosette technique using neuraminidase treated sheep red blood cells (SRBC). B cells were measured using a SRBC-hemolysin-guinea pig complement indicator system. The total leucocyte count in the pregnant group was …
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Regulation of the germinal center reaction by T helper cells and T regulatory cells
… Within the GC, follicular T helper (TFH) cells promote GC B cell differentiation and in turn the proper antibody production to protect us from invading pathogens. We wished to study the regulation of this process by transcription factors STAT3 and Bcl6. STAT3 is important for both TFH cell …
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Effects of Maternal Iron Deficiency During Reproduction on Phagocytosis, Antibody Formation and Cell Growth in the Suckling Rat (Immune Response)
… In Experiment 1, phagocytosis was measured in 17-day-old pups by nitroblue tetrazolium (NBT) dye reduction. NBT reduction per ml blood was similar among 6, 12 and 250 ppm iron pups, despite a significant increase in phagocytes/ul blood. Plasma lysozyme and peroxidase activities were …
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Effects of dietary tyrosine and tryptophan supplementation on immunity and brain neurotransmitter levels after SRBC injections in chickens
… or L-tryptophan prior to the injection of sheep red blood cells (SRBC). The 0.1% tyrosine supplementation increased primary IgM and secondary IgG titers at some time periods in Leghorns and decreased secondary IgM titers at Day 5 in broilers, while 0.1% tryptophan addition decreased Leghorn …
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Comparison of Micrscan Identification and Susceptibility Testing Methods for Streptococcus Dysgalactiae to Conventional Biochemical Reactions and Kirby-Bauer Susceptibility Testing Methods
… used in the MicroScan, nine were compared to the standard Kirby-Bauer method and/or results obtained from the literature. S. dysgalactiae was reported as sensitive to penicillin on 89.4% of the strains tested by the MicroScan, 98.4% by the Kirby-Bauer method, and 98.0% by the literature …
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Genetics, behavior, and disease resistance in chickens
… frequency of head shaking, antibody titers to sheep red blood cells, and plasma corticosterone levels was influenced by the genetic background of the population studied. Line differences were observed for the degree of mortality, lesions, and abnormal droppings in response to a challenge with …
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Toxic effects of dietary methylmercury on immune system structure, function, and development in the American kestrel (Falco sparverius)
… and antibody-mediated immune function using the sheep red blood cell (SRBC) hemagglutination assay. Hematology profiles were evaluated over time in adult males and nestlings to monitor immunological and physiological status of kestrels. Primary and secondary immune system organs were examined …
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Genetics, humoral immunoresponsiveness, and disease resistance in chickens
… to SRBC. Primary antibody response, measured 5, 10, and 20 days after inoculation with SRBC was greater in HA than LA chicks inoculated at 14, 21, and 28 days of age. In chicks injected at 7 days of age, a higher frequency of responders was observed for HA than LA chicks suggesting an …
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Bilateral Asymmetry in Chickens of Different Genetic backgrounds
… generations for high or low antibody response to sheep red blood cells than in their F1 crosses. The bilateral traits were 39-day shank length and length and weight of the first primary wing feather. Shank length was again measured on day 49 while body, heart, shank, and lung weights and ceca …
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IN VITRO ANTIBACTERIAL ACTIVITY OF 12 COMMERCIAL MOUTHRINSE FORMULATIONS.
… tongue dorsum, were grown on enriched Brucella blood agar, comprised of 4.3% Brucella agar supplemented with 0.3% bacto-agar, 5% defibrinated sheep blood, 0.2% hemolyzed sheep red blood cells, 0.0005% hemin, and 0.00005% menadione. Pure cell suspensions of each species were adjusted to a 0.5 …
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Immunomodulation by dietary lipids: soybean oil, menhaden fish oil, chicken fat, and hydrogenated soybean oil in Japanese quail (Coturnix coturnix japonica) and Bobwhite quail (Colinus virginianus)
… no differences in the fatty acid profile between blood and liver within respective dietary treatments in the two species. Dietary fatty acids had no effect on antibody titers against sheep red blood cells (SRBC) at 1, 2 and 8 months following the start of dietary lipid treatment in JAP. However, …