Figure 1.
Plasma IgG and IgG-subclass responses of C57BL/6 WT, IL-4 KO, BALB/c WT and IL-4/IL-13 double KO mice. Mice mice were sensitized by oral or nasal route by administration of PPE and CT on days 0 and 7. Plasma samples were collected on day 14 and Ab responses were analyzed by ELISA. Results are expressed as means of individual titles ± SD (5 mice per group). (* p < 0.05).