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Table 2 Pigments and staining methods

From: Considerations in hiPSC-derived cartilage for articular cartilage repair

  Non-hematogenous pigment Hematogenous pigment
Staining Lipofuscin Melanin Chromaffin
Bleach Sensitive Sensitive Weakly sensitive Resistant
PAS Positive Negative Negative Negative
Giemsa Ortho-chromasia (dark blue) Meta-chromasia (dark green) Meta-chromasia (red purple)  
Schmorl’s reaction Positive Positive Weakly positive  
Berlin blue Negative Negative Negative Positive (hemosiderin)