Growth of some attenuated influenza viruses in hamster tracheal organ cultures

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Abstract
Hamster tracheal organ cultures were infected with different influenza viruses and the metabolic activity measured using a tetrazolium reduction assay. In addition, relative ciliary activity was observed, virus multiplication measured, and histological studies were made. The hamster organ cultures proved relatively simple to set up and were sensitive to infection with influenza viruses; and the tetrazolium reduction was a reliable objective measure of relative tissue damage correlating well with histological and virological findings as well as with visual assessment of ciliary activities.