- 1. Entamoeba coli, nonpathogenic, smear with trophozoites * Lieder_Pr1161h
- 2. Chilomastix mesnili, flagellate found in human intestine, nonpathogenic, smear with trophozoites * Lieder_Pr225h
- 3. Giardia lamblia intestinalis, human parasite, smear with trophozoites * Lieder_Pr221h
- 4. Balantidium coli, human parasite, smear with trophozoites * Lieder_Pr4265t