Biological Stains

Congo Red

  1. Amyloid
  2. Apple green birefringence in polarised light because of beta pleated sheets

Giemsa

  1. Borrelia
  2. Plasmodium
  3. Trypanosomes
  4. Chlamydia.

PAS

  1. Glycogen
  2. Mucopolysaccharides
  3. Used to diagnose whipples disease

Zeihn Neilsen

  1. Acid fast baceria

India Ink

  1. Cryptococcus neoformans

Silver stain

  1. Fungi
  2. Legionella

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