Figure 7 .

Evaluation of host immune mediators. Transcriptional data for major host immune response genes (b-f) and viral mRNA levels (a) are shown at 1d.p.i. in C57/BL6 mice infected with 10⁵ EID₅₀ of various strains of pandemic H1N1 influenza virus (NC2, NC8 and NC11) and mock infection with HBSS was given to blank animals. Results are presented as mean ± SEM of mRNA levels normalized with mouse β-actin gene. Statistical differences were calculated by Mann Whitney U test. ** - P < 0.001, * - P < 0.01.