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  "path": "/archaeology/ancient-china/toxic-plant-on-ming-dynasty-era-surgical-tools-may-be-worlds-oldest-chemical-evidence-of-topical-anesthetic",
  "publishedAt": "2026-05-25T23:01:00.000Z",
  "site": "https://www.livescience.com",
  "tags": [
    "Ancient China",
    "Archaeology"
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  "textContent": "An analysis of residue on centuries-old surgical tools reveals the use of a toxic anesthetic in Ming dynasty-era Chinese medicine.",
  "title": "Toxic plant on Ming dynasty-era surgical tools may be world’s oldest chemical evidence of topical anesthetic"
}