Periodic Acid Schiff (PAS) stain
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Description: This method is used for detection of glycogen in tissues such as liver, cardiac and skeletal muscle on formalin-fixed, paraffin-embedded tissue sections, and may be used for frozen sections as well. The glycogen, mucin, and fungi will be stained purple and the nuclei will be stained blue.
Fixation: 10% formalin.
Section: paraffin sections at 5 um.
Glycogen, mucin and some basement membranes: red/purple