[Morphological observation on Blastocystis hominis].

AIM: To observe the morphology of Blastocystis hominis. METHODS: The morphology of Blastocystis hominis found in the fecal specimens from school children and diarrheal cases was examined by using normal saline smear, iodine stain and iron-hematoxylin staining method in Ali, Xizang Autonomous Region and Xinjiang Autonomous Region. RESULTS: The morphology of Blastocystis hominis was found to include four types, namely vacuolized, granular, amoeboid and binary fission. CONCLUSION: The vacuole type was the most often seen and accounted for 84% of all 4 types. Blastocystis hominis infection was often found to be associated with Entamoeba coli and other intestinal protozoa, leading to diarrhea in these patients.