Diagnostic parasitology

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25 Cards. Created by Beth Smithson ().
 
Term  
Definition
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Entamoeba histolytica trophozoite. 12-25um Single nucleus with a small central karyosome, can see ingested red blood cells and clear pseudopodia

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E histolytica troph

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E histolytica/dispar cyst: 1-4nuclie. smooth uniform outer wall. small central karyosome

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flask shaped amoebic ulcer

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amoebic trophozoites in situ (large intestinal invascion)

15-25um

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e coli 1-8 nuclei. irregular peripheral chromatin

right - 7.5-10um

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E nana - troph left and cyst right

7.5-10

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e nana

10-12 um right

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iodamoeba butschlii troph left cyst right

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iodamoeba butschlii - large glycogen mass present

8-12um

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Blastocystis hominis

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Giardia lamblia - 12-15um pear shaped. large sucking disc on the ventral surface - so it attaches to the intestinal mucosa. four pairs of flagella and 2 nuclei. fresh diarrhoea esp with mucus

10-15um

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Giardia lamblia cyst - oval shape, smooth wall. 2-4nuclie. central internal axostyle

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Giardia lamblia cyst

10-15um

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Chilomastix mesnili trophozoite - lemon shaped

8-10um

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chilomastix mesnili cyst (iodine) - characteristic knob at the anterior end, single large nucleus - karyosome is large and centrally placed

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chilomastix mesnili cyst

8-14um

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trichomonas hominis trophozoite (no cyst stage). tear-droped. axostyle runs from the nucleus. 4 free flagella at anterior end

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Balantidium coli troph (40-70um) left and cyst right (50-60um)

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trophozoite in tissue (balantidium coli)