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. 2007 May 9;4:42. doi: 10.1186/1743-422X-4-42

Table 3.

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

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 Mean of 4 experiments ± standard deviation

2 Baculovirus was concentrated 10-fold before HA titration

3 N/A = not applicable