Fig. 3. : soluble egg antigen (SEA) and soluble worm antigen preparation (SWAP)-specific IgG1 (A and B) and IgG2a (C and D) antibodies. Swiss Webster mice born from infected mothers (BIM), suckled by infected mothers (SIM), born and suckled by schistosomotic mothers (BSIM), and born and suckled from uninfected mothers (control) were postnatal infected with 80 S. mansoni cercariae. Isotype levels in the plasma were measured by ELISA in dilutions SEA 1:256 (IgG1) and 1:16 (IgG2a), and SWAP 1:64 (IgG1) and 1:8 (IgG2a) 60 days after infection. The results represent the median of absorbance (OD) ± standard error for 10 animals/group. The results are showing one representative of three independent experiments. •: p < 0.05 compared with the control group; #: p < 0.05 compared with the BSIM group.