Effector Pathways in Peanut-Induced Anaphylaxis Figure 1. Antibody responses after PE oral sensitization in different mouse strains. C3H/HeOuJ (C3H), C57BL/6 and BALB/c mice were exposed to PBS+CT (cont) or PE+CT (PE) during a 4 week period, as described in material and methods. Graphs depict serum levels of PE-specific IgA, IgG1, IgG2a, IgE and IgG2c at day 36. Data are represented as mean AU6 SEM of 8 mice. *: p,0.05 between indicated PE sensitized groups. doi:10.1371/journal.pone.0028917.g001 PLoS ONE | www.plosone.org 3 December 2011 | Volume 6 | Issue 12 | e28917