Dr. Murai Éva - Gubányi András szerk.: Parasitologia Hungarica 29-30. (Budapest, 1997)

IE IF Fig. 1. A — Rostellar hooks of Paradilepis scolecina collected from the gut of a cormorant. Video image recording, B — Rostellar hooks of the encapsulated plerocercus larva of'Paradilepis scolecina collected from the wall of bile duct of a bream. Video image recording, C - E — Paradilepis scolecina plerocercus larvae located in a cyst adhering to the serous membrane of the bile duct of a bream , F — Wall of the cyst of Paradilepis scolecina plerocercus (C: The cysts of the plerocercus larvae of Paradilepis scolecina (arrow) arc attached to the bile duct (b) by thin lamellae of serous membrane (s). H&E, 40; D: Invaginatcd scolices of the plerocercus larva of Paradilepis scolecina (arrow). The cyst of the parasite is sunken in the serous membrane of the bile duct (b). H&E, 160; E: In some places the tegument of the parasite (arrow) is pressed to the cyst wall while elsewhere the space between the tegument and the cyst wall is filled by fluid. At its two ends, the cyst is attached to the serous membrane of the bile duct by connective tissue (c). H&E, 160; F; The wall of the cyst is constituted by an internal hyaline layer (h) of parasitic origin, an outer layer composed of flattened cells (o) which is probably of parasitic origin, and a connective tissue layer (c) of host origin. H&E, 300)