Protozoans Identification

MLS 4300 Parasitology

Naegleria fowleri

Amebic keratitis

Acanthomoeba spp.

Amoeba found in soil that causes granulomatous amebic encephalitis (GAE) in immunocompromised children and AIDS patients

Balamuthia mandrillaris

15-20 micrometers

Entamoeba histolytica cyst

Entamoeba histolytica cyst

Entamoeba histolytica trophozoite

Entamoeba histolytica trophozoite

Arrows indicate multiple pointed chromatoid bodies

Entamoeba polecki (cyst) under iodine

Has ingested WBCs

Entamoeba gingivalis

<10 micrometers

Entamoeba hartmanni cyst under iodine

Entamoeba hartmanni trophozoite

Entamoeba coli cyst under iodine

Entamoeba coli cyst

Entamoeba coli trophozoite

5-12 micrometers

Endolimax nana cysts

5-12 micrometers

Endolimax nana trophozoite

Iodamoeba bütschlii cyst

Iodamoeba bütschlii trophozoite

Two amebae species that possess irregular karyosomes

Endolimax nana and Iodamoeba bütschlii

Trichrome stain

Blastocystis hominis

Trichrome stain

Blastocystis hominis

Giardia duodenalis cyst

Oval with 2-4 nuclei, retracted cytoplasm, central axoneme

Giardia duodenalis cyst

Giardia duodenalis trophozoite

Giardia duodenalis trophozoite

Falling leaf motility

Giardia duodenalis

Dientamoeba fragilis

Dientamoeba fragilis

Flagellate with two nuclei connected by a division spindle filament, no observable flagella, and non-directional movement

Dientamoeba fragilis

Chilomastix mesnili cyst

Cyst with a curved cytosomal fibril (shepherd's hook)

Chilomastix mesnili

Chilomastix mesnili trophozoite

Pentatrichomonas hominis

Pentatrichomonas hominis

Trichomonas vaginalis

Trichomonas vaginalis

Trichomonas vaginalis