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. 1987;176(1):27-35.
doi: 10.1007/BF00189406.

Subtype-specific identification of influenza virus in cell cultures with FITC labelled egg yolk antibodies

P C Döller, G Döller, H J Gerth

Subtype-specific identification of influenza virus in cell cultures with FITC labelled egg yolk antibodies

P C Döller et al. Med Microbiol Immunol. 1987.

Abstract

We report on results obtained with a direct immunofluorescence test for subtype-specific identification of influenza virus in detached cells of MDCK cultures after inoculation of 281 clinical specimens from patients with influenza-like disease. Influenza virus antibodies were produced in eggs from immunized hens and labelled with FITC. In 157 cases CPE was found in MDCK cells. A total of 57 cases of influenza A (H3N2), 86 cases of influenza A (H1N1), and 14 cases of influenza B were identified. In 33 cases of influenza A (H1N1) infection with massive CPE guinea pig but not chicken erythrocytes were agglutinated by the cell culture supernatants. The single step immunofluorescence test described proved easy to perform and results were obtained within 1 h after CPE was observed in contrast to the conventional HIT which is very time-consuming.

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