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Table 3 Comparison of HA titer of influenza and baculoviruses with hemadsorption to insect and mammalian cells expressing HA.

From: Receptor binding specificity of recent human H3N2 influenza viruses

  Hemagglutination titer Hemadsorption (A540)1
  Influenza virus Recombinant baculovirus2 MDCK cells Sf9-cells
  Human Chicken Human Chicken Human Chicken Human Chicken
OK/323/03 64 0 512 0 0.73 ± 0.07 0.03 ± 0.005 0.71 ± 0.02 0.26 ± 0.06
OK/369/05 wt 64 0 128 0 0.76 ± 0.02 0.20 ± 0.005 0.80 ± 0.09 0.26 ± 0.03
OK/369/05 S138A N/A3 N/A 64 0 N/A N/A 0.82 ± 0.07 0.31 ± 0.08
OK/372/05 64 32 64 0 0.74 ± 0.004 0.40 ± 0.01 1.05 ± 0.09 0.35 ± 0.06
  1. 1 Mean of 4 experiments ± standard deviation
  2. 2 Baculovirus was concentrated 10-fold before HA titration
  3. 3 N/A = not applicable