Figure 2: SEM micrograph of tegumental surface of adult Stellantchasmus falcatus (A-C) exposed in Tyrode’s solution as control group; (A) Ventral surface, scale bar (sb.) = 50 μ. (B) Oral sucker, sb. = 5 μ. (C) Spine and sensory organ on anterior part of dorsal surface, sb. = 2 μ. (D-F) exposed in 100% aqueous extract of papaya seeds; (D) Ventral surface, sb. = 50 μ. (E) Loss of spines around the oral sucker, sb. = 5 μ. (F) Blebbing, rupturing of the body surface and curving at the edge of the spines, sb. = 2 μ. (G-I) exposed in 100% aqueous extract of bitter cucumber fruits; (G) Dorsal surface, sb. = 50 μ. (H) Flanking of tegumental surface, sb. = 5 μ. (I) Blebbing, rupturing of the body surface and curving at the edge of the spines, sb. = 2 μ.