Slide Prep Flashcards
(30 cards)
The study of cells and their surrounding envi (extracellular components) and their organization into tissues and organs
Histology
The study of indiv cells
Cytology
Type of electron microscope that emits beams that pass over the tissue surface
Scanning EM
Type of electron microscope that emits beams that penetrate the tissue
Shows more detail
Transmission EM
Eyepiece magnification
10x
Scanner magnification
4x
LPO magnification
10x
HPO magnification
40x
OIO magnification
97-100x
Only used for peripheral blood and bone marrow
Angstrom value
0.1 nm / 10^-10 m
Diameter of HPO field of view
0.4 mm
Diameter of RBC
7.74 um
Steps of slide preparation
- Fixation
- Embedding
a. Dehydration
b. Clearing - Staining
Step that preserves tissue morphology and architecture and prevents cell digestion
Fixation
2 examples of fixatives
Formaldehyde
Glutaraldehyde
Step for obtaining a rigid consistency for sectioning
Embedding
Two steps that precede embedding
Dehydration
Clearing
Reagent used for dehydration
EtOH (40, 60, 80, 90%)
Lipid solvents that can be used for bathing in the clearing step
Benzene or xylene
Water and alcohol not miscible with paraffin
Xylene miscible with paraffin
Machine used for sectioning
Microtome
T/F
Slides for alight microscope can be used for an electron microscope
False
Basic dyes react with?
Acidic dyes react with?
Acidic structures (basophilic)
Basic structures (acidophilic)
Structures stained by hematoxylin
And also color
Blue
Nucleus (DNA, RNA)
Acidic regions of cytoplasm
Cartilage matrix
Ribosomes
(Acidic structures)
Structures stained by eosin
And color
Pink
Basic regions of cytoplasm
Collagen fibers