Parasitology lab: Nematodes 2: 1-35

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    Dirofilaria immitis larvae (microfilaria)

    Direct smear slide
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    Large strongyles 

    Mucosa of large intestines illustrating natural infection of adult blood sucking
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    Strongyle egg in fecal float
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    Infective larvae (L3 stage) of strongyles
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    Yearling horse in poor condition as result of chronic infections of parasites and malnutrition
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    Left to right: Ascarids, large strongyles, small strongyles, pin worms and tapeworms comparing size and gross morphology
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    Strongylus vulgaris

    Aneurysm of cranial mesenteric artery
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    S. vulgaris larvae (L3 infective stage)

    Hemorrhagic inflammation and necrosis of cecum and ventral colon of a foal
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    Strongylus edentatus 

    Enlargement of cecal veins and perivascular tissues via the portal circulation to the liver
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    Parascaris equorum 

    Small intestines which have perforated wall of mesenteric attachment
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    Oxyuris equi 

    Common "pinworm" in horse
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    Oxyuris equi

    "Pinworm" Horse
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    Parascaris equorum 

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    Ascarid egg in a fecal flotation preparation
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    Gasterophilus intestinalis 

    "Common bot" on the hairs of the forelimb at the knee
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    Upper molars of a horse illustrating periodontal ulcers containign 1st and 2nd stages of Gasterophilus sp.
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    Second stage of Gasterophilus intestinalis "Common bot" at base of tongue
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    Dictyocaulus arnfieldi 

    Lungworms in trachea of horse
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    Onchocerca cervicalis

    Skin lesion in naval area 

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    Onchocerca cervicalis 

    Segments of ligamentum nuchae
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    Draschia megastoma and Habronema muscae 

    Specimens of stomach worms from horse
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    Draschia megastoma 

    Stomach wall of a horse
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    Draschia megastoma 

    In stomach wall of a horse
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    Cutaneous habronemiasis (summer sores) affecting penile sheath of a stallion
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    Cutaneous habronemiasis (summer sores) with lesions at the orifice of urethra
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    Trichostrongylus axei

    "Minute stomach worm"
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    Trichostrongylus axei

    "Minute stomach worm"
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    Thelazia lacrymalis 

    Eyeworm on the eye of a horse along the border of the nicitanation membrane
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    Strongyloides westeri 

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    Weanling foal exhibiting typical stance of piperazine toxicosis syndrome
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    Beef cattle showing signs of clinical parasitism as reflected in diarrhea and poor condition
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    Calf with ostertagiasis

    Note: Bottle jaw, emaciation and diarrhea
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    Dissection of lungs is helpful post-mortem to diagnose lungworms.
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    Dictyocaulus viviparous 

    In the air passages
Card Set:
Parasitology lab: Nematodes 2: 1-35
2015-06-24 01:34:13
Nematodes 35

Nematode cd 2 slides 1-35
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