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Noun: Gram's procedure
  1. A staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolourized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are Gram-positive and those that do not retain it are Gram-negative
    - Gram's method, Gram method, Gram's stain, Gram stain

Type of: staining