Iodine stain. Left, an Entamoeba coli trophozoite. Right, this artefact is morphologically like a trophozoite, but the inside “nucleus” is actually superimposed fecal debris.    

Plant hair in a concentrated wet mount of stool. Plant hairs can be common in stool and may be confused for the larvae of hookworm or Strongyloides stercoralis. However, they are often ...