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. 2010 May 26;48(7):2515–2523. doi: 10.1128/JCM.02286-09

FIG. 4.

FIG. 4.

Luciferase activity in Luc9.1 cells upon infection with seasonal, avian and 2009 pandemic H1N1 influenza A viruses. (A) Luc9.1 cells were infected with the seasonal H1N1, H3N2, pandemic H1N1, or virus isolated from animal species at an MOI of 0.01. Renilla luciferase activity was measured at 24 h postinfection. Error bars depict standard error, and brackets denote P values from Student's t test: *, P < 0.001. (B) Luc9.1 cells were inoculated with highly pathogenic H5N1 (A/Vietnam/1203/04, A/Vietnam/JP 12-2/05, and A/Hong Kong/213/03) at an MOI of 0.01. Renilla luciferase activity was measured at 24 h postinfection. Error bars depict standard error, and brackets denote significance per Student's t test. *, P < 0.05.