All

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 G01 Biological Sciences D001690 +
  G01.703 Pharmacology D010600 +
   G01.703.795 Toxicology D014116 +
     G01.703.795.850 Toxicogenetics D043922 
 G02 Health Occupations D006281 +
  G02.628 Pharmacology D010600 +
   G02.628.795 Toxicology D014116 +
     G02.628.795.850 Toxicogenetics D043922 
 H01 Natural Sciences D010811 +
  H01.158 Biological Sciences D001690 +
   H01.158.703 Pharmacology D010600 +
    H01.158.703.795 Toxicology D014116 +
      H01.158.703.795.850 Toxicogenetics D043922