Fig. 2

Neutral red staining of Schistosoma mansoni adult worms incubated with febrifugine. Male and female S. mansoni adult worms were incubated with none (male: a, female: b) or 0.5 μg/ml febrifugine (male: c, female: d) for 5 days and stained with neutral red. it intestinal tract, vt vitellaria, ant. anterior, mid. middle, pos. posterior. Scale bar = 1 mm