FIXATION: 1.ALDEHYDES

FIXATION: 1.ALDEHYDES
35問 • 1年前
  • Chasny Halasan
  • 通報

    問題一覧

  • 1

     For routine HP techniques

    formalin

  • 2

     Produced from oxidation of methanol

    formalin

  • 3

    formalin is Usually buffered to pH ____with _______

    7, phosphate buffer

  • 4

    concentration percent of gas form aldehydes

    100

  • 5

    concentration percent of stock concentration (causes overhardening of the external surfaces of tissues) aldehydes

    37-40

  • 6

    concentration percent of working solution; most commonly used aldehydes

    10

  • 7

    what is the cause of white paraformaldehyde precipitates that leads to turbidity

    prolonged storage

  • 8

    what is the cause of Formation of formic acid that reduced staining quality, and formation of formalin pigment

    unbuffered

  • 9

    Action of formic acid with excess blood will lead to effect of what color of precipitates?

    brown/black precipitates

  • 10

    Remedy for White paraformaldehyde precipitatesturbidity

    add 10% methanol

  • 11

    List the two reagents of Kardasewitsch's method

    70% ethanol, 28% ammonia H2O

  • 12

    Lilies's method reagents?

    Acetone, 70% ethanol, H2O2, ammonia H2O2

  • 13

     Formalin diluted with 10% NaCl

    10% Formol-Saline

  • 14

     Traditionally, the most common fixative

    10% Formol-Saline

  • 15

     Recommended for CNS tissue and general post-mortem tissues for histochemical examination

    10% Formol-Saline

  • 16

     Best general tissue fixative

    NBF

  • 17

     Best for iron-containing pigments and elastic fibers which do not stain well after Susa, Zenker or Chromate fixation,

    NBF

  • 18

     Has HgCl2

    Formol-Sublimate

  • 19

    Excellent for silver reticulum staining method, does not need washing, fixes lipids

    Formol-Sublimate

  • 20

     Has 95% ETOH, Picric acid, and GHAc

    Gendre’s

  • 21

    good for microincineration techniques, fixes sputum

    Gendre’s

  • 22

     For gastrointestinal (GI) tissues, prostate biopsies, and bone marrow (BM)

    Hollande's

  • 23

     Made up of 2 formaldehyde resides linked by three carbon chains

    Glutaraldehyde

  • 24

     For enzyme histochemistry and electron microscopy

    Glutaraldehyde

  • 25

    Glutaraldehyde concentration: for immunoEM

    0.25%

  • 26

    Glutaraldehyde concentration: for small TSE fragments

    2.5%

  • 27

    Glutaraldehyde concentration: most common

    3%

  • 28

    Glutaraldehyde concentration: for large TSE

    4%

  • 29

     Polymer of formalin

    Paraformaldehyde

  • 30

     Powder in form, used in 4%

    Paraformaldehyde

  • 31

     Plastic embedding

    Paraformaldehyde

  • 32

     For ultrathin and electron microscopy

    Paraformaldehyde

  • 33

     Acrolein in glutaraldehyde or formalin

    Karnovsky’s Paraformaldehyde

  • 34

     P: for Electron Histochemistry and Electron Immunocytochemistry

    Karnovsky’s Paraformaldehyde

  • 35

    no smudging of nuclei and distortion of staining compared with formalin

    40% Aqueous Glyoxal

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    問題一覧

  • 1

     For routine HP techniques

    formalin

  • 2

     Produced from oxidation of methanol

    formalin

  • 3

    formalin is Usually buffered to pH ____with _______

    7, phosphate buffer

  • 4

    concentration percent of gas form aldehydes

    100

  • 5

    concentration percent of stock concentration (causes overhardening of the external surfaces of tissues) aldehydes

    37-40

  • 6

    concentration percent of working solution; most commonly used aldehydes

    10

  • 7

    what is the cause of white paraformaldehyde precipitates that leads to turbidity

    prolonged storage

  • 8

    what is the cause of Formation of formic acid that reduced staining quality, and formation of formalin pigment

    unbuffered

  • 9

    Action of formic acid with excess blood will lead to effect of what color of precipitates?

    brown/black precipitates

  • 10

    Remedy for White paraformaldehyde precipitatesturbidity

    add 10% methanol

  • 11

    List the two reagents of Kardasewitsch's method

    70% ethanol, 28% ammonia H2O

  • 12

    Lilies's method reagents?

    Acetone, 70% ethanol, H2O2, ammonia H2O2

  • 13

     Formalin diluted with 10% NaCl

    10% Formol-Saline

  • 14

     Traditionally, the most common fixative

    10% Formol-Saline

  • 15

     Recommended for CNS tissue and general post-mortem tissues for histochemical examination

    10% Formol-Saline

  • 16

     Best general tissue fixative

    NBF

  • 17

     Best for iron-containing pigments and elastic fibers which do not stain well after Susa, Zenker or Chromate fixation,

    NBF

  • 18

     Has HgCl2

    Formol-Sublimate

  • 19

    Excellent for silver reticulum staining method, does not need washing, fixes lipids

    Formol-Sublimate

  • 20

     Has 95% ETOH, Picric acid, and GHAc

    Gendre’s

  • 21

    good for microincineration techniques, fixes sputum

    Gendre’s

  • 22

     For gastrointestinal (GI) tissues, prostate biopsies, and bone marrow (BM)

    Hollande's

  • 23

     Made up of 2 formaldehyde resides linked by three carbon chains

    Glutaraldehyde

  • 24

     For enzyme histochemistry and electron microscopy

    Glutaraldehyde

  • 25

    Glutaraldehyde concentration: for immunoEM

    0.25%

  • 26

    Glutaraldehyde concentration: for small TSE fragments

    2.5%

  • 27

    Glutaraldehyde concentration: most common

    3%

  • 28

    Glutaraldehyde concentration: for large TSE

    4%

  • 29

     Polymer of formalin

    Paraformaldehyde

  • 30

     Powder in form, used in 4%

    Paraformaldehyde

  • 31

     Plastic embedding

    Paraformaldehyde

  • 32

     For ultrathin and electron microscopy

    Paraformaldehyde

  • 33

     Acrolein in glutaraldehyde or formalin

    Karnovsky’s Paraformaldehyde

  • 34

     P: for Electron Histochemistry and Electron Immunocytochemistry

    Karnovsky’s Paraformaldehyde

  • 35

    no smudging of nuclei and distortion of staining compared with formalin

    40% Aqueous Glyoxal