Nervous Tissue Flashcards
Which dyes are best for demonstration of Nissl substance?
- Cresyl echt
- Thionin
What is the purpose of using Weigert’s?
Demonstration of myelin
What will myelin look like after staining with Weigert’s?
Blue
What is the purpose of using luxol fast blue?
Differentiate white and grey matter
What is the principle of luxol fast blue?
Copper phthalocyanine dye which is soluble in organic solvent.
What are idea fixatives for luxol fast blue
- NBF
- K dichromate
What size of sections are required for demonstrations of myelin sheath?
10-15 microns
What will grey matter look like after staining with luxol fast blue?
colourless
What will white matter look like after staining with luxol fast blue?
Blue
What will demyelinated myelin look like after staining with luxol fast blue?
colourless
What will Nissl substance look like after staining with luxol fast blue?
purple violet
What is the purpose of the Weil’s method?
Demonstrate myelin
What is the first demonstration step in Weil’s method?
Ferric ammonium sulfate
What is the second demonstration step in the Weil’s method?
Borax ferricyanide
What is the best fixative to use for Weil’s method?
NBF
What will myelin look like after being stained with Weil’s method?
Blue / Black
What will the background look like after being stained with Weil’s method?
light Tan
What is the purpose of Mallory’s phosphotungstic acid?
Demonstrate glial cells
What is the idea fixative for Mallory’s phosphotungstic acid?
NBF
What size of sections should be used for the demonstration of glial cells?
6 - 8 microns
What will glial cells look like after being stained with mallory’s?
Blue
What will nuclei look like after being stained with mallory’s?
Blue
What will myelin look like after being stained with mallory’s?
Blue
What will neurons look like after being stained with mallory’s?
salmon
What is the purpose of the cajal’s method?
Demonstrate astrocytes
What is the idea fixative for cajal’s method?
- Formalin ammonium bromide
What will astrocytes look like following staining with cajal’s mehtod?
Black