Flashcards
Fixatives
Cards in this deck (5)
- 1FormaldehydeNon-coagulant (methylene bridges), additive
37-40% formaldehyde gas in water
penetrates quick, fixes slowly
+NaCl to correct osmolality
increase basophilia - 210% Neutral Buffered FormalinNon-coagulant (methylene bridges), additive
4% formaldehyde gas in water
frozen sections possible
increase basophilia
*best general fixative - 3Acetic AcidNon-coagulant, non-additive
fixes nuclei
lyses red blood cells
tissue swelling
*best fixative for nuclei - 4Picric AcidCoagulant, additive
destroys nucleic acids
removes calcium and iron from tissue
increases acidophilic
stains tissue yellow
also a mordant - 5GluteraldehydeNon-coagulant, Additive
crosslinking but no methylene bridge
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- Histotechnology Flashcards on Fixatives, created by Victoria Station on 25/03/2019.
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- Victoria Station
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