egg of trichuris trichiura whipworm in human stool

egg trichuris trichiura whipworm human stool 400x analyze analyzing cestode disease exam experiment fecal feces fluke helminthes helminthology infection laboratory magnification medical micro microbiology microscope microscopy nematode organism original parasitic patient pinworm protozoa research roundworm science scientific tapeworm technology test trematoda trichinosis trichuliasis trichuriasis worm