Protective effect of AWBE antigens against a challenge infection with 150 live S. mansoni cercariae in C57BL/6 mice.

1Average n° of adult worms (males and females) recovered in the perfusion fluid of liver and small mesenteric veins from each experimental group (Mean ± SEM, n = 10).The reduction of the parasitic load was calculated according to formula: % Protection = (1−B/A)×100 [31] where A is the average n° of worms in the AWBE-immunized group and, B the average n° of worms in the adjuvant (ADJ) inoculated group (Control). AW: Adult Worms; AWBE: Adult Worm n-Butanol Extract; ADJ: adjuvant inoculated mice; B: mice injected with buffer. Significance by t student test (compared to group of ADJ-inoculated animals):*significant (p≤0.05).