Fig. 1.

Proliferative response to paramyosin peptides by peripheral blood mononuclear cells (PBMC) of individuals resistant to Schistosoma mansoni reinfection (RR) and susceptible to reinfection (SR) (a), and of individuals naturally resistant to S. mansoni infection (NR) and infected with the parasite (INF) (b). Results are expressed as mean of proliferation index plus standard deviation. Statistically significant differences determined by Mann–Whitney test analysis (P < 0·05) among all tested groups compared to non-infected individuals are denoted by an asterisk, and between RR versus SR are denoted by two asterisks. Dashed lines represent the cut-off.