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. 2009 Oct 28;106(45):18936–18941. doi: 10.1073/pnas.0908842106

Fig. 5.

Fig. 5.

Serum IgG specific HBsAg titers after single dose immunization of pigs with 20 μg of HBsAg formulated with PCPP intramuscularly (open column), 10 and 20 μg of HBsAg formulated with PCPP intradermally (black columns) (seven animals per group, week 2 data, intradermal immunization was performed using microneedles, all formulations contained 66 μg of PCPP). *, Significantly higher than in an intramuscular group (open column). P < 0.05 (ANOVA). **, Significantly higher than in an intramuscular group (open column). P < 0.05 (ANOVA).