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Molecular epidemiology of a large classical swine fever epidemic in the European Union in 1997-1998.
outbreaks were related and caused by a virus belonging to the genetic subgroup 2.1. As this type of virus had been reported infrequently in Europe and not at all since 1993, we postulate that it was newly ...
Production of bovine herpesvirus type 1-seronegative latent carriers by administration of a live-attenuated vaccine in passively immunized calves.
became clearly BHV-1 seronegative by different serological tests, as did uninfected control calves after the disappearance of maternal antibodies, and they remained so for long periods. A cell-mediated ...
An experimental infection with classical swine fever in E2 sub-unit marker-vaccine vaccinated and in non-vaccinated pigs.
direct and indirect contact was significantly (p <0.001) delayed in vaccinated pigs as compared to non-vaccinated pigs. In the non-vaccinated pens over 40% of the pigs died and typical clinical signs ...
Isolation of adherent polycyclic aromatic hydrocarbon (PAH)-degrading bacteria using PAH-sorbing carriers.
liquid mineral medium in which PAH s were supplied as crystals and (ii) a new method in which PAH degraders were enriched on and recovered from hydrophobic membranes containing sorbed PAH s. Both ...
Production of antibodies against chicken interferon-gamma: demonstration of neutralizing activity and development of a quantitative ELISA.
Blot analysis or natural ChIFN-gamma in immunofluorescence experiments. As determined by competition ELISA s, mAbs 3D5, 4C6 and 3A3 recognized the same or adjacent epitopes on the ChIFN-gamma molecule, ...
Dietary L-carnitine supplementation increases antigen-specific immunoglobulin G production in broiler chickens.
Chickens Dietary Supplements Immunoglobulin G sex factors Temperature Weight gain Abstract: The usefulness of supplementary dietary L-carnitine as an immunomodulator to increase antigen-specific antibody ...
Diagnosis of foot-and-mouth disease by RT-PCR: evaluation of primers for serotypic characterisation of viral RNA in clinical samples.
Aphthovirus DNA Primers Enzyme-Linked Immunosorbent Assay Evaluation Studies as Topic Foot-and-Mouth Disease Genome, Viral Reverse Transcriptase Polymerase Chain Reaction RNA, Viral Sensitivity and Specificity ...
Comparison of biological activities of natural and recombinant chicken interferon-gamma.
replication of cytolytic viruses in chicken embryo fibroblasts and to activate macrophages, as was determined by nitric oxide production. Levels ranging between 100 and 300 microg/ml of BacChIFN-gamma could be ...
Development of immunocompetence of broiler chickens.
demonstrated by immunohistochemical staining early in the development of chicken spleen. However, the typical structures of the spleen, such as the peri-arteriolar lymphoid sheath (PALS) and the ellipsoids with ...
Effects of inhalation of dust and endotoxin on respiratory tracts of pigs.
fluids were increased in all groups exposed to dust. Macrophage counts were increased in pigs exposed to inhalable dust concentrations as low as 4.4 mg/m3, and lymphocyte counts were increased in groups ...