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Sirius Red
Chemical compound From Wikipedia, the free encyclopedia
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Sirius Red F 3B (Direct Red 80) is an azo dye primarily used in staining methods for collagen and amyloid.[1] It has the molecular formula C45H26N10Na6O21S6.
In histology, sirius red staining is used in various domains of diagnostic to observe fibrosis levels in a lot of cases of inflammation induced by cancer, vascular or metabolic pathologies.[2]
In bright field microscopy the following can be observed:
- The nuclei in yellow
- The cytoplasm in yellow
- Collagen fibers in red
- Muscular fibers in yellow
- Red blood cells in yellow

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See also
- Collagen Hybridizing Peptide, a peptide that stains denatured collagen in tissues
References
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