The investigation was carried on mice infected with influenza A/053/74/H3N2 virus. 129/Ao/Boy, inbred mice, were inoculated intranasally with influenza virus. The alveolar and peritoneal cells from infected and uninfected animals were induced in vitro with Newcastle disease virus. It was shown that the alveolar cells from infected mice produce more interferon than the cells from control mice, but the peritoneal cells from both groups of animals produced the same amount of interferon.
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