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Change in morphology of influenza virus after treatment with N2 gas plasma. Influenza A virus (A/PR/8/34) in allantoic fluid was air-dried on cover glass and treated with N2 gas plasma (1.5 kpps for 5 min) using BLP-TES No.1. An identical sample was also prepared that was not treated with N2 gas plasma. The morphologies of influenza virus were observed at 5 kV with a magnification of x50,000 by SEM (JSM-6320F, JEOL Ltd.).
