Micro Lab Bugs ID (copy)

Schistosoma mansoni

• Lateral spine, clear, ovoid, thick shelled

• 116-180 um

116-180 um

Schistosoma mansoni
- 116-180 um

116-180 um

Fasciolopsis buski

• Yellow/brown, indistinct operculum, ovoid

• 130-150 um

130- 150 um

Fasciolopsis buski

130- 150 um

Fasciolopsis buski

130-150 um

Fasciola hepatica

• Indistinguishable from F. buski

• Ellipsodial, operculated

130-150 um

Fasciola hepatica

130-150 um

Fasciola hepatica

130-150 um

Clonorchis sinensis

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

• 27-35 um

27-35 um

Clonorchis sinensis

27-35 um

Clonorchis sinensis

27-35 um

Paragonimus mexicanus

• Yellow/brown, oval, prominent shouldered operculum

• 80-120 um

80-120 um

Paragonimus mexicanus

80-120 um

Paragonimus mexicanus

80-120 um

Hookworm egg
- Thin shelled, yolk cells retract, leaving a clear space

60-75 um

Hookworm egg

60-75 um

Hookworm rhabditiform
- Long buccal canal, inconspicuous genital region, bulbed esophagus

250-300 um

Hookworm rhabditiform

250-300 um

Hookworm filariform
- Pointed tail, 1:2 ratio of esophagus to intestine

500-700 um

Hookworm filariform

500-700 um

Trichostrongylus

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

• 75-95 um

75-95 um

Trichostrongylus

75-95 um

Strongyloides stercoralis rhabditiform
- Short buccal canal, prominent genital area (red arrow)

180-380 um

Strongyloides stercoralis rhabditiform

180-380 um

Strongyloides stercoralis filariform
- Notched/pointed tail

600 um

Strongyloides stercoralis filariform

600 um

Enterobius vermicularis

• Oval with flattened side

• 50-60 um

50-60 um

Enterobius vermicularis

50-60 um

Fertile Ascaris lumbricoides

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

• 55-75 um

45-75 um

Fertile Ascaris lumbricoides

45-75 um

Infertile ascarsis lumbricoides
- Elongated, thin shell, undifferentiated cell mass, corticated

85-90 um

Infertile ascarsis lumbricoides

85-90 um

Trichuris trichiura

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

• 50-55 um

50-55 um

Trichuris trichiura

50-55 um

Diphyllobothrium latum

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

• 55-75 um

55-75 um

Diphyllobothrium latum

55-75 um

Diphyllobothrium latum

55-75 um

Taenia sp.
Round, thick outer shell w/ visible inner membrane
- 31-45 um

31-45 um

Taenia sp.

31-45 um

Hymenolopsis nana

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

• 30-47 um

30-47 um

Hymenolopsis nana

30-47 um

Hymenolepis diminuta

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

• 70-85 um

70-85 um

Hymenolepis diminuta

70-85 um

Dipylidium caninum

• Round, egg packets w/ 5-15 eggs

• 25-40 um

25-40 um

Dipylidium caninum

25-40 um

E. histolytica trophozoite

20u

E. histolytica trophozoite

20u

E. histolytica trophozoite

20 u

E. histolytica trophozoite

20u

E. histolytica cyst (mature)
- 4 nuclei and bar indicate maturity

15u

E. histolytica cyst

15u

E. histolytica cyst

15u

E. histolytica cyst

15u
wet mount

Entamoeba coli troph

up to 50u
sluggish motility

Entamoeba coli troph

up to 50u
sluggish motility

Entamoeba coli troph

up to 50u
sluggish motility

Entamoeba coli cyst

up to 35u

Entamoeba coli cyst

up to 35u

Entamoeba coli cyst

up to 35u

Endolimax nana troph
"ball and chain"

6-12u

Endolimax nana troph
"ball and chain"

6-12u

Endolimax nana cyst

• potato with eyes

• usually 4 karyosomes

5-10u

Endolimax nana cyst

• potato with eyes

• usually 4 karyosomes

5-10u

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

5-20u

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

5-20u

Iodamoeba butschlii cyst

• single nucleus with large karyosome

• crescent halo

• glycogen vacuole

5-20u

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

8-20u

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

8-20u

Iodamoeba butschlii troph

• large dense karyosome

• heavier nuclear membrane than Endolimax

• 'dirty' cytoplasm

8-20u

Blastocystis hominis vacuolated form

5-40u

Blastocystis hominis vacuolated form

5-40u

Blastocystis hominis vacuolated form

5-40u

Blastocystis hominis vacuolated form

5-40u

Dientamoeba fragilis

5-15u

dientamoeba fragilis

5-15u

Giardia lamblia troph

10-20u

dientamoeba fragilis

5-15u

Giardia lamblia troph

10-20u

Giardia lamblia troph

10-20u

Giardia lamblia cysts

10-14u

Giardia lamblia cysts

10-14u

Giardia lamblia cysts

10-14u

Giardia lamblia cysts

10-14u

Giardia lamblia cysts

10-14u

Trichomonas vaginalis

Trichomonas vaginalis

Chilomastix mesnili troph
- tear-drop shaped troph with cytostome

10-15u

Chilomastix mesnili troph
- tear-drop shaped troph with cytostome

10-15u

Chilomastix mesnili troph
- tear-drop shaped troph with cytostome

10-15u

Chilomastix mesnili cyst
- lemon shaped cyst

6-11u

Chilomastix mesnili cyst
- lemon shaped cyst

6-11u

Chilomastix mesnili cyst
- lemon shaped cyst

6-11u

Balantidium coli troph

50-100u

Balantidium coli troph

50-100u

Balantidium coli troph

50-100u

Balantidium coli cyst

50-70u

Balantidium coli cyst

50-70u

Balantidium coli cyst

50-100u

Cystoisospora belli oocyst
- 1 sporoblast

Cystoisospora belli oocyst
- 2 sporocysts