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) | Â |
Schmorl’s reaction | Positive | Positive | Weakly positive |  |
Berlin blue | Negative | Negative | Negative | Positive (hemosiderin) |