The right track.
Thomas
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D000900:Anti-Bacterial Agents / Q000266:history*; D001695:Biology / Q000266:history*; D049711:History, Modern 1601-; D006920:Hygiene / Q000266:history*; D007328:Insulin / Q000266:history*; D014481:United States
D000900:Anti-Bacterial Agents; D007328:Insulin