egg of trichuris trichiura in human stool

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