Effect of the C. pluviosa F4 fraction on murine-derived Plasmodium. Groups of ten C57BL/6 mice infected i.p with 106 iE Plasmodium chabaudi chabaudi were left untreated or treated with different doses of the F4 fraction administered i.p for 4 consecutive days (days 0 to 3 p.i), starting on day 0 at 1 h p.i. The parasitaemia levels were determined daily until day 12 p.i. Results are expressed as the mean of a group mice ± SD. (*p < 0.05 vs. untreated mice group). The administration of F4 fraction is indicated by arrows.