Laura Currie
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Medicine Test sobre Microbial Histochemistry, creado por Laura Currie el 27/10/2018.

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Laura Currie
Creado por Laura Currie hace alrededor de 6 años
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Microbial Histochemistry

Pregunta 1 de 25

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False gram negatives can be due to - and faults such as and over

Explicación

Pregunta 2 de 25

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Quality control for Grams include - , and for Gram positives, and and for Gram Negatives.

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    Fibrin
    elastic fibres
    paneth cell granules
    Neutrophils
    epithelial cells

Explicación

Pregunta 3 de 25

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Histopathological features of Mycobacteria includes for Tuberculosis. Mycobacteria are considered , but most are . They can be identified by using the stain

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    Langhan's giant cell
    Gram Neutral
    Gram positive
    Ziehl Neelsen

Explicación

Pregunta 4 de 25

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Mycobacterium and Nocardia have unusual that are waxy and nearly due to the presence of

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    cell walls
    impermeable
    mycolic acid

Explicación

Pregunta 5 de 25

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is resistant to acid-alcohol, whilst is resistant to acid. M. Tuberculosis is stained by the whilst M. Leprae stains with the

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    M. Tuberculosis
    M. Leprae
    classic Ziehl Neelsen
    Fite stain

Explicación

Pregunta 6 de 25

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Filamentous bacteria with a beaded and branching morphology includes and . They are both Gram positive, however, are Fite negative, whilst is Fite positive.

Explicación

Pregunta 7 de 25

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Ziehl Neelsen controls include and .

Explicación

Pregunta 8 de 25

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Helicobacter Pylori is able to survive in the stomach because it produces pH neutralising Ammonia

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 9 de 25

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Helicobacter Pylori can cause , , and .

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    gastritis
    ulcers
    carcinoma
    lymphoma

Explicación

Pregunta 10 de 25

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Staining of Helicobacter Pylori includes , which is a difficult silver stain to do. , and (usually has dark background).

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    Warthin Starry
    Immunohistochemistry
    Acridine orange

Explicación

Pregunta 11 de 25

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Increased incidence of mycoses can be due to (due to HIV disease and ). Histopathology is important to diagnose fungi because may nit be available for several days or weeks, and some may not culture.

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    immunosuppression
    organ transplantation
    microbiologic culture
    fungi

Explicación

Pregunta 12 de 25

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Some fungi like and stain well on H&E. are easy to see, whilst many stain poorly.

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    aspergilli
    zygomycetes
    Pigmented fungi
    yeasts

Explicación

Pregunta 13 de 25

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Morphologies of fungi includes for like , and for .

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    round
    yeasts
    Candida
    hyphae
    Molds

Explicación

Pregunta 14 de 25

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Fungi stains like is pseudofungi positive. It is quick and easy to do, but and Nocardia and does not stain well.

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    PAS
    old fungi
    Actinomyces

Explicación

Pregunta 15 de 25

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is high contrast with minimal background, stains both and non-viable elements. are unsustained, and do not stain.

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    Methenamine Silver (GMS)
    degenerative
    fungal
    Calcific bodies
    Pseudo-fungi

Explicación

Pregunta 16 de 25

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Pseudo-fungi look like fungi on H&E and . Fibrin, , exogenous fibres and bacteria. PAS positive but negative. Sometimes can be Perls and Von Kossa .

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    positive
    negative
    PAS
    collagen
    GMS

Explicación

Pregunta 17 de 25

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Pseudo-fungi includes Hamazaki-Wesenberg bodies that look like , and Gamna-Gandy bodies and small branching that look like .

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    blood vessels
    fungal hyphae
    yeast

Explicación

Pregunta 18 de 25

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are the most common mould infection. They produce and Use the Yasue's silver nitrate-rubeanic acid method.

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    Aspergillus
    invasive
    non-invasive
    oxalic acid

Explicación

Pregunta 19 de 25

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neoformans use Alcian blue and Mucicarmine for mucopolysaccharide rich capsule. Masson Fontana for -like substance in capsule form.

Explicación

Pregunta 20 de 25

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Histoplasma capsulatum are tiny, intracellular observed within . differentiates Histoplasma capsulatum () from Leishmania and toxoplasma (both ).

Explicación

Pregunta 21 de 25

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In Ziehl Neelsen, acid fast bacteria stains , whilst non acid-fast stains

Explicación

Pregunta 22 de 25

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Pneumocystis carinii are invisible with both H&E and . But are best shown with and STB

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    PAS
    GMS

Explicación

Pregunta 23 de 25

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In order to compare true fungi and pseudo-fungi, we must confirm a positive with a classical GMS (using chromic acid oxidation). of pseudo-fungi might be caused by sectionsin the methenamine silver solution. Compare with surrounding . In some cases, staining can be useful.

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    metal
    PAS
    positive
    Weak GMS positivity
    collagen
    overstaining

Explicación

Pregunta 24 de 25

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Hemozoin is a formed due to a parasite's inability to . This is usually and found in parasites.

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    catabolise
    pigment
    heme
    golden-brown
    Malarial

Explicación

Pregunta 25 de 25

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Apart from electron microscopy and assuming good specific is available, is best for demonstrating viruses such as and BK virus.

Explicación