Fig. 28

Fellodistomum fellis cercariae, internal musculature. a: scheme illustrating the arrangement of additonal internal muscle bundles (left side) and dorsoventral muscle fibers (right side); b: Z-stack of sagittal optical slices through the preacetabular region; c: Z-stack of oblique longitudinal optical slices through the preacetabular region; d: Z-stack of oblique longitudinal optical slices through the postacetabular region. Roman numerals mark the additional internal muscle bundles. dvm – dorsoventral muscle fibers; eb – excretory bladder; os – oral sucker; ph – pharynx; vs – ventral sucker. Scale bars 10 μm