eggs liver flukeparasitic flatworm infection in fish scale.

animals biology cattle dendriticum dicrocelium disease eggs fish flat flatworm fluke flukeparasitic freshwater goat grazing hog human infection intestinal invertebrate lancet liver livestock medical medicine microphotography microscope parasite parasitic parasitology photomicrography pig platyhelminth platyhelminthes pond scale snail trematoda trematode uncooked veterinarian worm zoology