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 G04 Biological Phenomena, Cell Phenomena, and Immunity D001687 +
  G04.185 Biological Phenomena D001686 +
   G04.185.515 Microbiologic Phenomena D008827 +
    G04.185.515.286 Drug Resistance, Microbial D004352 +
     G04.185.515.286.347 Drug Resistance, Bacterial D024881 +
      G04.185.515.286.347.500 beta-Lactam Resistance D018440 +
       G04.185.515.286.347.500.600 Penicillin Resistance D010403 +
        G04.185.515.286.347.500.600.050 Ampicillin Resistance D000668 

 G12 Chemical and Pharmacologic Phenomena D002620 +
  G12.392 Drug Resistance D004351 +
   G12.392.269 Drug Resistance, Microbial D004352 +
    G12.392.269.347 Drug Resistance, Bacterial D024881 +
     G12.392.269.347.500 beta-Lactam Resistance D018440 +
      G12.392.269.347.500.600 Penicillin Resistance D010403 +
       G12.392.269.347.500.600.050 Ampicillin Resistance D000668