Browsing by Author "Toro Guzmán, Haroldo"
Now showing items 1-11 of 11
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Toro Guzmán, Haroldo (1988)An enzyme immunoassay on nitrocellulose, immunoblot test (IBT) was used to detect antibodies in antisera prepared against different avian infectious bronchitis virus (IBV) strains. All antisera were tested against the M41 ...
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Toro Guzmán, Haroldo; Fernández , I. (1994)Since circulating antibody titres against infectious bronchitis virus (IBV) often correlate poorly with protection against re‐infection, the lachrymal specific IgA level of IBV vaccinated chickens was evaluated as an ...
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Toro Guzmán, Haroldo; Godoy, V.; Larenas Herrera, Julio; Reyes, E.; Kaleta, E. F. (American Association of Avian Pathologists, 1996)The histological changes in the harderian gland (HG) induced by the attenuated H-120 infectious bronchitis virus (IBV) vaccine strain and the persistence of this virus in the stroma of the gland was evaluated in chickens ...
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Hidalgo Olate, Héctor; Gallardo, R; Toro Guzmán, Haroldo (1986)Se obtuvo tres aislados virales de aves comerciales vacunadas contra Bronquitis Infecciosa (BI), con diagnóstico presuntivo de esta enfermedad. Las características patológicas desarrolladas por los aislados 7916, 7891 y ...
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Toro Guzmán, Haroldo; McNulty, M. S.; Hidalgo Olate, Héctor; Rosende Ollarzú, Sergio; Connor, T. J. (1994)Broiler and layer chicken sera obtained from four different farms in Chile were tested by indirect immunoperoxidase assay for the presence or absence of antibodies against chicken anemia virus (CAV). Tests were conducted ...
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Smith Schuster, Pedro; Zurita Arevalo, Livio; Canale Montenegro, Francisco; Ferreira Vigouroux, Luis Arturo; Toro Guzmán, Haroldo (1994)An ELISA to detect circulating antibodies against K99 pili, a major attachment factor to intestinal epithelial cells of Escherichia coli in calves, was performed. Two methods of K99 pili purification were attempted. Best ...
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Toro Guzmán, Haroldo; Reyes, Eduardo; Redmann, T.; Kaleta, E. F. (1996)The specific lacrimal fluid IgA levels and the specific serum IgG levels of broiler chicks (meat type hybrids (MT)), brown-egg layer chicks (heavy layer (HL)), and white leghorn chicks (light layer (LL)) were compared after ...
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Toro Guzmán, Haroldo; Hidalgo Bravo, Héctor; Ibańez, M.; Hafez, H. M. (American Association of Avian Pathologists, 1998)Chicken and turkey serum samples were obtained and tested in an enzyme-linked immunosorbent assay to establish the presence or absence of antibodies to avian pneumovirus in the commercial poultry population of Chile. A ...
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Toro Guzmán, Haroldo; Pavéz Gálvez, Eduardo; Gough, R. E.; Montes Ortiz, Gustavo; Kaleta, E. F. (Taylor and Francis Ltd., 1997)This study provides information on serology and serum chemistry of the Andean condor (Vultur gryphus). Twenty condors living under natural conditions were captured, blood sampled, measured, and released. In addition, 12 ...
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Toro Guzmán, Haroldo; Lavaud, P.; Vallejos, P.; Ferreira Vigouroux, Luis Arturo (1993)Pure 125I-radiolabeled chicken IgG was inoculated intravenously into 2-week old chickens. Radioactivity in lachrymal fluid samples was first detected 10 minutes postinoculation (PI). Radioactivity levels declined up to day ...
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Toro Guzmán, Haroldo; Pavéz Gálvez, Eduardo.; Redmann, T. (Carfax Publishing Company, 1996)Diagnosis of infectious diseases in birds using direct assays such as conventional ELISA or immunofluorescence require antibody directed to IgG of each avian species. In this study, we tested binding of human C1q to different ...