Parasitology Lab: Protozoans slides

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    • Eimeria leukarti 
    • Strongyloides westeri
    • Strongyle egg
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    • Eimeria leukarti 
    • Strongyloides westeri 
    • 2 strongyle eggs
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    Eimeria zuernii 

    More pathogenic of the 11 sp of coccidian of cattle in North American
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    Eimeria zuernii 

    Cattle
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    Giardia bovis

    Flagellate protozoan of cattle, small intestines
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    Giardia bovis

    Cattle, 2 posterior flagella
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    Giardia bovis

    Cattle, ventral sucking disc and 2 nuclei
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    Giardia bovis

    Cattle, ventral concavity and posterior flagella
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    Eimeria ovina

    Sheep
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    Eimeria ovina

    Sheep, polar cap present at one end of the cyst
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    Trichomonas suis

    "Swine nasal trichomonad"
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    Trichomonas suis

    "Swine nasal trichomonad"

    Slide made using saline or lactated ringers solution
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    • Eimeria sp. of swine 
    • Oesophagostomum sp
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    3 Eimeria sp. shown
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    Balantidium coli

    Swine

    Ciliated, found in cecum and colon causing "balantidosis". Mature form (trophozoite) which may cause dysentery in man and monkeys too.
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    Balantidium coli

    Trophozoite form
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    • Isospora bigemina (smaller)
    • Isospora ohioensis (bigger) 

    Coccidium of dogs, cats and foxes
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    Isospora bigemina 

    Sporulated oocysts and sporocysts
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    • F: Isospora felis
    • R: Isospora rivolta
    • T: Toxoplasma gondii 
    • C: Isospora cati (excreted sporulated)
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    • A: Sporulated Isospora felis
    • B: Unsporulated Isospora felis
    • C: Hookworm egg
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    Isospora canis 

    Sporulated
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    Giardia 

    Face produced by nucleus, nucleoli and centroile rod
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    Giardia

    Fresh cyst shows thin, smooth outer cyst wall
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    Giardia 

    Distorted by hypertonic flotation solutions
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    Entamoeba

    Trophozoites found in fresh feces, can cause severe dysentery
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    Balantidium coli

    Usually seen in conjunction with Trichuris infection
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    Coccidian oocysts float readily with little distortion
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    Process of sporulation with coccidia occurs quickly in warm humid conditions and sporocysts can form in 24-48 hrs in feces
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    Eimeria

    Pathogenicity in dogs is unknown
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    Eimeria

    Development of sporocysts is proceeded by division of intact single cell of the oocyst into 4 cells
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    Fungal spores with oocysts
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    Eimeria

    Ruminant
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    • Toxoplasma 
    • Eimeria
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    Oocysts of rabbit feces
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    Isospora canis

    Oocysts from a dog
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Parasitology Lab: Protozoans slides
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Protozoans
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