white light microscopy and staining

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8 Terms

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different types of light microscopy

  • brightfield

  • darkfield

  • phase contrast

  • differential interference contrast

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feature of phase contrast

white halo around sample

<p>white halo around sample</p>
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feature of DIC

3D pseudo relief, light and dark sides

<p>3D pseudo relief, light and dark sides</p>
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what do hematoxylins stain

they stain negatively charged molecules (DNA,RNA)

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eosins stain

they stain positively charged molecules (cytoplasm, membrane, ECM)

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colour of hematoxylins

purple

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colour of eosins

pink

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immunohistochemistry (IHC)

  • enzyme conjugated to antibody targets antigen

  • substrate is cleaved = leads to stained precipitate

  • helps us to detect specific proteins in a sample