Fig. 2.

Anti-influenza activity of KAA-2 in MDCK cells infected with various influenza virus strains. Cell viability following incubation for 48 h with various influenza viruses in the presence of varying concentrations of KAA-2 was assayed using the NR dye uptake assay. Percent inhibition of infection is expressed as the average value of duplicate assays. Closed squares, A/FM/1/47; open squares, A/Kyoto/1/81; closed stars, A/Bangkok/10/83; open stars, A/Oita/OU1 P3-3/09; closed triangles, A/Beijing/262/95; open triangles, A/WSN/33; closed circles, A/Aichi/2/68; open circles, A/Udorn/72; closed diamonds, A/Philippines/2/82; open diamonds, B/Ibaraki/2/85.