title: Free-living amoebae identified by cytologic examination of gastrointestinal washings.
mesh_terms: D000328:Adult; D000656:Amoeba / Q000166:cytology; D000818:Animals; D004864:Equipment and Supplies / Q000592:standards; D004945:Esophagoscopy; D005750:Gastric Juice / Q000166:cytology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013194:Staining and Labeling