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Parasitology > Midterm I - Website Photos [Better Quality] > Flashcards

Midterm I - Website Photos [Better Quality] Flashcards

1
Q
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Babesia canis: Merozoites

Blood smear

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2
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Cryptosporidium baileyi oocysts

On the ciliated cell surface of the trachea

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3
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Babesia canis merozoites

Blood smear, Giemsa-stained

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4
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Unsporulated Eimeria oocysts from a lamb

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5
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Eimeria acervulina macrogamonts & developing oocysts

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6
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Eimeria maxima: Sporulated oocyst

Iodine stain

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7
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Eimeria bakuensis: Unsporulated oocysts

Floatation method, methylene-blue stain

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8
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Eimeria: Unsporulated oocyst

E. robusta, methylene-blue stain

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9
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Eimeria stiedai: Oocysts

In destroyed biliary epithelium

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10
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Leishmania donovani: Promastigotes

Giemsa stain

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11
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Toxoplasma gondii: Tissue cysts

Mouse brain, HE stain

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12
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Trypanosoma equiperdum: Trypomastigotes

Giemsa stain

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13
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Encephalitozoon cuniculi: Focal encephalitis (see macrophages)

Rabbit brain, HE stain

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14
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Encephalitozoon cuniculi: Interstitial nephritis

Rabbit kidney, HE stain

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15
Q
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Encephalitozoon cuniculi: Interstitial nephritis + CT proliferation

Rabbit kidney, HE stain

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16
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Eimeria bovis (larger) & Eimeria zuernii (smaller): Oocysts

Floatation, native

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17
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Leishmania donovani: Amastigotes in macrophages

Giemsa stain

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18
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Sarcocystis tenella: Tissue cyst

Sheep oesophagus, HE stain

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19
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Eimeria stiedai: Biliary hyperplasia

Rabbit liver, HE stain

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20
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Trypanosoma cruzi: Pseudocyst

In a section of heart muscle, HE stain

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21
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Trypanosoma equiperdum (Dourine): Dollar-spots on the horse

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22
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Giardia intestinalis: Cyst

Faecal smear, Lugol solution (iodine)

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23
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Giardia intestinalis: Trophozoite

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24
Q
A

Engorged tse tse fly

Responsible for the transmission of African Trypanosomes E.g:

  • T. vivax
  • T. congolensis
  • T. brucei brucei
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25
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Histomonas meleagridis: Ameboids

Liver tissue, PAS stain

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26
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Kissing bug: Biological vector

Transmission of Leishmania chagasi (Chagas disease)

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27
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Leishmania: Amastigotes

Inside a macrophage

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28
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Cutaneous Leishmaniosis

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29
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Clinical signs of Nagana (African Trypanosmosis)

Transmitted by the Tsetse fly

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30
Q
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Trichomonas infection (Hepatic form)

Pigeon head & liver

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31
Q
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Sandfly: Biological vector

Transmission of Leishmania

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32
Q
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Trichomonas: Trophozoites (Most likely: poultry)

Giemsa stain

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33
Q
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Trypanosoma brucei: Trypomastigotes

Blood smear, Giemsa stain

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34
Q
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Trypanosoma cruzi: Trypomastigote

+ a large kinetoplast, Giemsa stain

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35
Q
A

Lesions in the caeca & liver associated with Histomona meleagridis

Samples from a turkey

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36
Q
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Lesions in the surface of the duodenum associated with Eimeria acervulina

Sample from a chicken

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37
Q
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Eimeria brunetti: Bloody mucus in the lumen of the hindgut

Sample from a chicken

38
Q
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Macrogamonts with granular cytoplasm

One-nucleated oocysts surrounded by a wall in the destroyed wall of the intestinal mucosa

39
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A

Eimeria maxima: Small haemorrhages & whitish spots of schizonts in the mucosa of the small intestine

Not to be confused with “salt & pepper” spots in E. necatrix infections

40
Q
A

Eimeria necatrix: Haemorrhages in the jejunal wall

41
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A

Nests of schizonts

Destroyed intestinal mucosa of chicken, HE stain

42
Q
A

Eimeria tenella: Lesions of the caeca

Sample from a domestic chicken

43
Q
A

Eimeria tenella: Lesions of the caeca

Sample from a domestic chicken

44
Q
A

Eimeria truncata: Macrogamonts

Goose kidney tissue, HE stain

45
Q
A

Eimeria: Sporulated oocyst

Stained with iodine

46
Q
A

Three schizonts & free merozoites in a native mucosal smear

47
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A

Coccidium spp.: Thick-walled, unsporulated oocysts

48
Q
A

Eimeria stiedai: Biliary hyperplasia

Rabbit liver, HE stain

49
Q
A

Clinical signs of acute bovine coccidiosis

Either E. zuernii or E. bovis

50
Q
A

Clinical signs of Isosporosis of piglets (Isospora suis)

51
Q
A

Eimeria stiedai: Unsporulated oocysts

These are often stained yellow by the bile

52
Q
A

Eimeria bovis (large) & E. zuernii: Unsporulated oocysts

53
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A

Section of a globidium

Located in the top layer of interstitial mucosa

54
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A

Bovine coccidiosis (E. zuernii or E. bovis)

  • Pinhead-sized white spots in the thickened mucosa of the intestine
  • Covered with bloody mucus
55
Q
A

Eimeria flavescens: Dilated caecum of a rabbit

56
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A

Eimeria intestinalis: Thickened wall of small intestine

Sample from a rabbit

57
Q
A

Eimeria magna: White groups of macroschizonts

Wall of the small intestine, rabbit

58
Q
A

Eimeria piriformis: Thickened & whitish wall of large intestine

Sample from a rabbit

59
Q
A

Eimeria stedai:

  • Broadened parts of biliary ducts
  • Yellowish nodules can be seen on the surface

Rabbit liver sample

60
Q
A

Isospora: Sporulated oocyst

61
Q
A

Isospora: Oocyst from:

  1. A dog
  2. A cat
62
Q
A

Cryptosporidium baileyi:

  • Thick-walled oocysts (red)
  • Thin-walled oocysts (colourless)

Mucosal cell debris of bursa fabricus, Kinyoun stain

63
Q
A

Neospora caninum: Thick-walled tissue cyst

Brain tissue, HE staining

64
Q
A

Sarcocystis: Haemorrhagic diatheses on visceral serosa

Dalmeny disease (bo. only), Calf

65
Q
A

Besnoitia besnoiti: Large cysts

Subcutaneous tissue of bo., HE stain

66
Q
A

Sarcocystis gigantea: Cysts

Muscle layer of the oesophagus, sheep

67
Q
A

Sarcocystis: Cyst (longitudinal section)

Skeletal muscle, HE stain

68
Q
A

Besnoitia besnoti: Clinical symptoms

  • Top row: “Anasarca” stage
  • Bottom row: “Scleroderma” stage
69
Q
A

Sarcocystis: Cyst (cross-section)

Skeletal muscle, HE staining

70
Q
A

Sarcocystis: Cyst

Compressed skeletal muscle, native

71
Q
A

Sarcocystis: Thin-walled oocyst

Faecal debris

72
Q
A

Toxoplasma: Cysts

Brain tissue

73
Q
A

Toxoplasma gondii: Tachyzoites

Giemsa stain

74
Q
A

Toxoplasma: Cysts

Brain tissue, HE stain

75
Q
A

Toxoplasma gondii: Oocysts (Sporulated & unsporulated)

76
Q
A

Theileria annulata: Enlarged lymph nodes

(Bovine theileriosis)

77
Q
A

Babesia canis: Clinical signs

78
Q
A

Dermacentor reticulatus (brown dog tick/kennel dog tick)

The vector of Babesia canis

79
Q
A

Hepatozoon canis:

  1. In a mononuclear cell
  2. In a polymorphonuclear cell
80
Q
A

Encephalitozoonosis: Clinical sign

Interstitial nephritis

81
Q
A
  1. Babesia bigemina (large)
  2. Babesia divergens

In blood cells

82
Q
A

Theileria annulata: Schizonts

Taken from bovine lymphocytes

83
Q
A

Theileria equi: Merozoites

Blood smear

84
Q
A

Encephalitozoon cuniculi: Torticollis (clinical sign)

Rare occurance

85
Q
A

Histomonas meleagridis: Amoeboids

Liver tissue, PAS stain

86
Q
A

Giardia intestinalis: Trophozoites

87
Q
A

Eimeria truncata: Macrogamonts

Goose kidney tissue, HE stain

88
Q
A

Trypanosoma brucei: Trypomastigotes

Blood smear, Giemsa stain

89
Q
A

Entamoeba histolytica: Trophozoite

Faecal smear + Saline + Lugol

90
Q
A

Entamoeba histolytica: Cyst

Floatation method

Parasitology (4 decks)

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