egg of intestinal fluke in human stool

helminths minute tapeworm cestode hymenolepis diminuta taeniasis taenia worm hookworm nematode protozoa parasitic parasite analyzing test trichuliasis exam trichinosis trematoda trematode trichuriasis ascariasis fluke pinworm roundworm egg feces fecal stool microscopy trichuris trichiura ascaris lumbricoides paragonimus westermani paragonimiasis opisthorchis viverrini whipworm strongyloides stercoralis threadworm intestinal liver lung fasciolopsis buski