Figure 4.

Scanning electron microscopy of Mesocestoides corti adult worms incubated in vitro with thymol. (a) Control adult worm (43x). (b) Adult worm after 15 min of incubation (250 μg/mL). Note the tegumental alterations (75x). (c) Partial view of a strobila. Observe the extensive erosion of the tegument (1 h, 200 μg/mL, 200x). (d) Altered adult worm (1 h, 250 μg/mL). The constrictions between proglottids became difficult to distinguish (80x). (e) Adult worm after 1 h following incubation. Partial loss of microtriches (1 h, 150 μg/mL, 100x). (f) Adult worm totally altered after overnight incubation (150 μg/mL, 60x).