Perl's Prussian Blue shows what?

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Multiple Choice

Perl's Prussian Blue shows what?

Explanation:
Perl's Prussian Blue reveals ferric iron deposits in tissue, identifying hemosiderin. The stain reacts with Fe3+ in iron-containing compounds by forming an insoluble blue ferric ferrocyanide complex, so iron-rich pigments turn blue. This highlights iron storage sites and areas of prior hemorrhage or iron overload, shown as blue granules in cells like macrophages. It does not stain lipids, glycogen, or neutral mucin—the substances those other stains target—so those components would not appear blue with this reaction.

Perl's Prussian Blue reveals ferric iron deposits in tissue, identifying hemosiderin. The stain reacts with Fe3+ in iron-containing compounds by forming an insoluble blue ferric ferrocyanide complex, so iron-rich pigments turn blue. This highlights iron storage sites and areas of prior hemorrhage or iron overload, shown as blue granules in cells like macrophages. It does not stain lipids, glycogen, or neutral mucin—the substances those other stains target—so those components would not appear blue with this reaction.

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