Ilse Tischer

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Antibodies to porcine circovirus (PCV) which is the smallest animal virus known so far were found in 77–95 per cent of sera from slaughter pigs gathered in Berlin and two districts of Northern Germany. About 60 per cent of these positive sera had relatively high titres similar to those in experimentally infected pigs 3–6 weeks after infection. This(More)
Multiplication of porcine circovirus (PCV) was found to be inducible by treatment of infected cell cultures with 300mm glucosamine. One day after glucosamine treatment and after growth in fresh medium, an increase in the number of cells containing virus antigen of up to 50 times as compared to mock-treated cultures was observed. Analysis of this phenomenon(More)
By means of indirect immunofluorescence assay (IFA) using natural swine immune serum and hyperimmune serum from rabbits infected with porcine circovirus (PCV), a PCV antigen was detected present prior to the onset of viral and cellular DNA synthesis in nucleoli of cells of synchronized and growth stimulated infected PS cell cultures grown for more than 12 h(More)
An enzyme linked immunosorbent assay (ELISA) was developed for mass antibody screening to porcine circovirus (PCV) in pig herds of different age groups and of different husbandries. Infection with PCV was found to be common in all swine herds tested, with only one exception, a herd at a small farm. Statistically, the percentage of PCV negative sera(More)
Antibodies reacting with porcine circovirus (PCV) were found in sera of humans, mice, and cattle by means of an indirect immunofluorescence assay (IFA) and an ELISA. In man, the highest seroprevalence (23.9% in IFA and 30.2% in ELISA) was found among hospitalized patients with fever of partially unclear etiology. Non-hospitalized “healthy” persons of the(More)
Die Reaktionsfähigkeit von Erythrocyten mit Influenzavirus ist vom Neuraminsäuregehalt ihrer Receptoren abhängig. Der Neuraminsäuregehalt der Receptoren wurde durch Behandlung der Erythrocyten mit abgestuften Verdünnungen von Choleravibrionenfiltrat (RDE) enzymatisch verändert und die Reaktionsfähigkeit der behandelten und unbehandelten Erythrocyten durch(More)