What special stains can be done on the cytocentrifuge preparation to help establish the diagnosis

What special stains can be done on the cytocentrifuge preparation to help establish the diagnosis?

  • • Wright stain.
    • Lupus erythematosus cell: PMNs with ingested homogeneous nuclear material.
    • Reiter’s cell: large macrophage with ingested PMNs (cytophagocytic mononuclear cells).
    • Hydroxyapatite crystals in PMNs.
    • Charcot–Leyden crystals in eosinophils.
  • • Alizarin Red S: stains calcium crystals (hydroxyapatite and CPPD).
  • • Oil Red O/Sudan Black: stains for fat globules.
  • • Congo Red: stains amyloid fragments.
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