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Fig. 2 | Virology Journal

Fig. 2

From: The PB1 gene from H9N2 avian influenza virus showed high compatibility and increased mutation rate after reassorting with a human H1N1 influenza virus

Fig. 2

Replication of reassortant viruses in cell lines (A) and in mouse (B). A Virus replication of human wt WSN1-H1N1, avian wt 2093-H9N2 and reassortant viruses containing the avian PB2, PB1, PA or NP segments. Virus replication was measured by determining plaque forming units at several hours post infection of MDCK and DF1 cells. B Virus replication of human wt WSN1-H1N1, avian wt 2093-H9N2 and reassortant viruses containing the avian PB2, PB1, PA or NP segments. Virus replication in mouse turbinal tissue and lung was measured at. 4 days post infection using plaque assays. Plaque assays were repeated three times, the mean and sd of the PFU in logarithm of 10 was applied. Multiple t test with a = 0.05. *Significant difference. None indicated no significant difference

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