Table 29-4.

Selected Special Stains Used in Diagnostic Histopathology of the Liver

Material Stained	Stain Name(s)	Stain Appearance
Amyloid	Congo red	Green under polarized light
Glycogen	Periodic acid-Schiff (PAS)	Purple (removed with diastase treatment)
Lipid	Osmium	Black
	Oil red O	Red
Connective tissue/collagen	Sirius red	Deep red
	Masson's trichrome	Blue
Reticulin	Reticulin stain (Gordon and Sweet)	Black
Iron	Perl's Prussian blue	Deep blue
Copper	Rhodanine	Orange brown
Lipofuscin	Schmorl	Blue-green
	PAS (diastase resistant)	Magenta
	Acid-fast	Red