Entabmoeba coli cyst

- 15-20u

-1-8 nuclei

-eccentric karyosome

-uneven perepheral chromatin

-may contain chromatoidal bars

Entamoeba coli Trophozoite

-20-35 u

-muddy endoplasm

-ingested debris

-1 nucleus

--eccentric karysome

--uneven periperal chromatin

Entaboeba histolytica Cyst

-8-12 u

-1-4 nuclei

--central karyosome

--even peripheral chromatin

-may contain a glycogen vacoule

-granular cystoplasm

Entamoeba histolytica Trophozoite

-15-30u

-granular endoplasm

-1 nucleus

--central karyosome

--even peripheral chromatin

Endolimax nan Cyst

-6-8u

-4 nuclei

--peripheral chromatin may be hard to see

--Large karysome

Iodamoeba butschlii cyst

-8-12 u

-A large vacoule

-1 nucleus

--large karysome

Entamoeba gingivalis troph

-only troph

Balantidium coli troph

-cytosome- little mouth at end

-Macro and micro nucleus (may not see micro)

--macro is kidney bean shaped

-cilia (outside looks fuzzy)

-Vacoule

-~60x45 u

Balntidium coli cyst

-50-70 u

-circular

-macronucleus (kidney bean shaped)

-might see micronucleus

-vacoules

Dientamoeba fragilis troph

-only troph stage

-~10u

-1-2 nuclei, fragmented karysomes

Giardia lamblia troph

-~10-20 u

-2 nuclei

-axostyle down the middle

-sucker

Giardia lamblia cyst

-~9-14 u

-2-4 nuclei

-axostyle down middle

Chilomastic medsnili troph

-~10-20 u

-flagella

-cytosome with fibrin

-spiral groove

-curved posterure

Chilomastix mesnili cyst

-7-10 u

-nipple at end

-nucleus (chromatin pushed to nipple side)

-cytosome

Trichomonas species

-7-15 u

Ispospora belli oocyst

-1-2 sporocysts

-may stain acid fast

Cryptosporidium oocyst

-4-6 u

-up to 4 sporozoites

Toxoplasma gondii Tachyzoites

-3-6 u