Figure 3: Worms exposed to NBTP-OH. (A) Deformity of oral sucker and the anterior part of male, shrunken body with swelling. (B) Deformity of the dorsal aspect and gynaecophoric canal with erosions. (C, D) Swelling of tubercles and tegument erosions (arrow) with few spines on the tubercles. (E) Worms exposed to NBTP-F showed deformed male oral sucker and anterior body part. (F) Erosion, disorganization, blebs and fissures of tegument. (G) Swelling of tegumental folds and collapse of tubercles. (H) Disorganization of male tegument and deformity of the gynaecophoric canal.