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Noun: substantia nigra
  1. A layer of deeply pigmented grey matter in the midbrain; associated with the striate body; is involved in metabolic disturbances associated with Parkinson's disease and with Huntington's disease
    - nucleus niger, locus niger

Derived forms: substantia nigras

Type of: neural structure

Part of: mesencephalon, midbrain

Encyclopedia: Substantia nigra