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Toxic plant on Ming dynasty-era surgical tools may be world’s oldest chemical evidence of topical anesthetic

An analysis of residue on centuries-old surgical tools reveals the use of a toxic anesthetic in Ming dynasty-era Chinese medicine.

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NEEDS REVIEW

As of May 25, 2026 at 11:01 PM, this is how Optics News reads the wording differences in this story.

What happened An analysis of residue on centuries-old surgical tools reveals the use of a toxic anesthetic in Ming dynasty-era Chinese medicine.
The headline split This source map appears to mix related topics or outlier articles, so Optics should not treat it as a clean same-event wording gap yet.
Match confidence Developing. Only 2 sources are matched, and the source map is still narrow. Useful to watch, not enough to draw conclusions yet.
Same-event confidenceDeveloping

Shared tokens are only topic names, not a shared specific event.

Wording differs, but the match is too narrow to read confidently yet.

WHAT EACH SIDE EMPHASIZED

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CenterToxic plant on Ming dynasty-era surgical tools may be world’s oldest chemical evidence of topical anesthetic

Live Science · Center · News report

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SEE THE HEADLINES

C · CenterMostly Factual
Live ScienceNews report · May 25, 11:01 PM

Toxic plant on Ming dynasty-era surgical tools may be world’s oldest chemical evidence of topical anesthetic

toxicplantdynasty-erasurgicaltools

An analysis of residue on centuries-old surgical tools reveals the use of a toxic anesthetic in Ming dynasty-era Chinese medicine.

Open source
C · CenterHigh
Phys.orgNews report · May 25, 11:00 PM

Ancient anesthetic reveals Ming China's sophisticated medicine

ancientrevealschinassophisticatedmedicine

Microscopic analysis of residues on surgical scissors and tweezers from a 1348–1411 CE tomb in Jiangyin, China, finds the first evidence for the controlled application of a highly toxic che...

Open source
DetailsScore hidden · 2 sources · 1 bias buckets
Score hidden until the match is cleanerNeeds review confidence2 sources · 1 bias bucketsNeeds review · outlier detectedFormats: News report

SOURCE MAP CHANGES

May 25, 11:00 PM: Phys.org joined the source map.

May 25, 11:01 PM: Live Science joined the source map.

Now: score hidden until the source match is cleaner. Story health is needs review · outlier detected.