Figure 1From: Profiles of cytokine and chemokine gene expression in human pulmonary epithelial cells induced by human and avian influenza virusesKinetics of replication of different subtypes of influenza A virus in NCI-H292 cells. NCI-H292 cells were infected with different influenza virus subtypes: H1 - H1N1/2002, H5 - H5N1/2004, and H9 - H9N2/1997 with an m.o.i. of 1. Plasmid copy number expressed in natural logarithm (ln).Back to article page