strongyloides stercoralis parasit in human

agriculture analyzing animal background cestode diagnosis diarrhea disease enterobius exam fecal feces health helminthology human image infection infective isolated laboratory medical micro microbiology microscope microscopic microscopy nematoda nematode organism parasite parasitic pathogenic pinworms protozoa research roundworm soil stercoralis stool strongyloides strongyloidiasis technology test threadworm water white worm