Figure 1 Effects of antibody treatment during the induction phase on systemic immune responses. Spleens and blood were collected to evaluate ragweed (RW)‐induced proliferation (A) and cytokine production (B) of splenocytes and total Ig levels in serum (C), respectively. (A) Data are expressed as Δ cpm. Background cpm ± SEM were: 1163 ± 22 in normal rat immunoglobulin G (nrIgG)‐treated (control) group; 985 ± 49 in the anti‐IL10 antibody‐treated group; and 1102 ± 22 in the anti‐TGF β antibody‐treated group. (B) Data are expressed as pg/ml. (C) Data are expressed as ng/ml or μg/ml. *p<0.01, **p<0.05, compared with nrIgG‐treated group.