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

Toxic plant on Ming dynasty-era surgical tools may be world’s oldest chemical evidence of topical anesthetic
Live Science Monday 25 May 2026, 23:01 UTC By Kristina Killgrove 1 min read
Key Points

The sampled surgical instruments and a close-up of the residue found on each.

The sampled surgical instruments and a close-up of the residue found on each.
Originally published by Live Science Read original →

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