Digenetic trematodes.
D003135:Common Bile Duct / Q000469:parasitology / Q000473:pathology; D006801:Humans; D008099:Liver / Q000469:parasitology / Q000473:pathology; D014200:Trematoda / Q000469:parasitology; D014201:Trematode Infections / Q000469:parasitology / Q000473:pathology