Fig. 4. : hypersensitivity reactions to ovalbumin (OA). Swiss Webster mice born from infected mothers (BIM), suckled by infected mothers (SIM), and born and suckled by schistosomotic mothers (BSIM) were immunised with OA (100 μg/animal) in complete Freund’s adjuvant 60 days after postnatal infection (80 Schistosoma mansoni cercariae). All the mice were challenged with OA aggregated in the footpad eight days after immunisation. Postnatal infected or uninfected mice born and suckled by uninfected mothers (control) were also immunised with OA and equally challenged. The results represent the median of the net increase in footpad thickness of 10 mice/group ± standard error. The results are showing one representative of three independent experiments. •: p < 0.05 compared with the control group; #: p < 0.05 compared with the uninfected control group.