Micro Lab Bugs ID (copy)

Schistosoma mansoni

• Lateral spine, clear, ovoid, thick shelled

• 116-180 um

Schistosoma mansoni

• 116-180 um

Fasciolopsis buski

• Yellow/brown, indistinct operculum, ovoid

• 130-150 um

Fasciolopsis buski

Fasciolopsis buski

Fasciola hepatica

• Indistinguishable from F. buski

• Ellipsodial, operculated

Fasciola hepatica

Fasciola hepatica

Clonorchis sinensis

• Urn shape, seated operculum, small knob on apopercular end, thick shell

• 27-35 um

Clonorchis sinensis

Clonorchis sinensis

Paragonimus mexicanus

• Yellow/brown, oval, prominent shouldered operculum

• 80-120 um

Paragonimus mexicanus

Paragonimus mexicanus

Hookworm egg

• Thin shelled, yolk cells retract, leaving a clear space

Hookworm egg

Hookworm rhabditiform

• Long buccal canal, inconspicuous genital region, bulbed esophagus

Hookworm rhabditiform

Hookworm filariform

• Pointed tail, 1:2 ratio of esophagus to intestine

Hookworm filariform

Trichostrongylus

• Large and more ovular than hookworm, slightly pointed, wrinkled inner membrane

• 75-95 um

Trichostrongylus

Strongyloides stercoralis rhabditiform

• Short buccal canal, prominent genital area (red arrow)

Strongyloides stercoralis rhabditiform

Strongyloides stercoralis filariform

• Notched/pointed tail

Strongyloides stercoralis filariform

Enterobius vermicularis

• Oval with flattened side

• 50-60 um

Enterobius vermicularis

Fertile Ascaris lumbricoides

• Ovular, thick shell, distinct cell mass, bumpy surface

• 55-75 um

Fertile Ascaris lumbricoides

Infertile ascarsis lumbricoides

• Elongated, thin shell, undifferentiated cell mass, corticated

Infertile ascarsis lumbricoides

Trichuris trichiura

• Barrel shape, thick shell, rounded polar plugs on both ends

• 50-55 um

Trichuris trichiura

Diphyllobothrium latum

• Yellow/brown, oval, indistinct operculum, small knob on apopercular, indistinct non-shouldered operculum

• 55-75 um

Diphyllobothrium latum

Diphyllobothrium latum

Taenia sp. Round, thick outer shell w/ visible inner membrane

• 31-45 um

Taenia sp.

Hymenolopsis nana

• Round, thin shell w/ visible membrane, polar filaments

• 30-47 um

Hymenolopsis nana

Hymenolepis diminuta

• Round, striated and thin inner membrane, no polar filaments

• 70-85 um

Hymenolepis diminuta

Dipylidium caninum

• Round, egg packets w/ 5-15 eggs

• 25-40 um

Dipylidium caninum

E. histolytica trophozoite

E. histolytica trophozoite

E. histolytica trophozoite

E. histolytica trophozoite

E. histolytica cyst (mature)

• 4 nuclei and bar indicate maturity

E. histolytica cyst

E. histolytica cyst

E. histolytica cyst

Entamoeba coli troph

Entamoeba coli troph

Entamoeba coli troph

Entamoeba coli cyst

Entamoeba coli cyst

Entamoeba coli cyst

Endolimax nana troph "ball and chain"

Endolimax nana troph "ball and chain"

Endolimax nana cyst

• potato with eyes

• usually 4 karyosomes

Endolimax nana cyst

• potato with eyes

• usually 4 karyosomes

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

Blastocystis hominis vacuolated form

Blastocystis hominis vacuolated form

Blastocystis hominis vacuolated form

Blastocystis hominis vacuolated form

Dientamoeba fragilis

dientamoeba fragilis

Giardia lamblia troph

dientamoeba fragilis

Giardia lamblia troph

Giardia lamblia troph

Giardia lamblia cysts

Giardia lamblia cysts

Giardia lamblia cysts

Giardia lamblia cysts

Giardia lamblia cysts

Trichomonas vaginalis

Trichomonas vaginalis

Chilomastix mesnili troph

• tear-drop shaped troph with cytostome

Chilomastix mesnili troph

• tear-drop shaped troph with cytostome

Chilomastix mesnili troph

• tear-drop shaped troph with cytostome

Chilomastix mesnili cyst

• lemon shaped cyst

Chilomastix mesnili cyst

• lemon shaped cyst

Chilomastix mesnili cyst

• lemon shaped cyst

Balantidium coli troph

Balantidium coli troph

Balantidium coli troph

Balantidium coli cyst

Balantidium coli cyst

Balantidium coli cyst

Cystoisospora belli oocyst

• 1 sporoblast

Cystoisospora belli oocyst

• 2 sporocysts