Figure 1
From: Differential replication of avian influenza H9N2 viruses in human alveolar epithelial A549 cells
Replication of H9N2 subtypes in different cell types and chicken embryonated eggs. (A) A549, (B) LMH and (D) MDCK cells were infected by H1N1, H9N2/G1, H9N2/Y280 or H9N2/G9 at an m.o.i. of 0.01, and (C) chicken eggs were infected with the viruses at TCID50 of 2 × 106. Viral titres of the infected cells were measured at 6 h, 24 h and 48 h post-infection (pi). Each point represents the mean of viral titers for three independent experiments and the titres were statistically analyzed by the two tailed, paired t-test; *:p < 0.05; Mock, uninfected cells.