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. Author manuscript; available in PMC: 2015 Apr 7.
Published in final edited form as: Biotechnol J. 2010 Jan;5(1):17–23. doi: 10.1002/biot.200900267

Figure 3.

Figure 3

HAI titers. Day 0, 25 (post-immunized) and 47 (22 days post-boost) serum HAI antibody responses were assessed against an H1N1 A/Texas/5/2009 re-assortant (A) and H1N1 A/California/04/2009-presenting VLPs (B). Bars indicate GMT. Negative controls (neg. contr.) and baculovirus controls (BV) showed only background levels at all time points, whereas A/California/04/2009 VLPs (VLP) raised serum antibodies able to prevent virus-induced agglutination of chicken RBCs. Antibody levels increased to 2048 HAI units after boosting.