Modern medicine also uses leeches.[1] Their saliva is a natural anticoagulant an... | Hacker News

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adrienne on Feb 5, 2017 | parent | context | favorite | on: The Purpose of Sleep? To Forget, Scientists Say

Modern medicine also uses leeches.[1] Their saliva is a natural anticoagulant and their sucking promotes oxygenation.

1: https://en.wikipedia.org/wiki/Leech#Medicinal_use_of_leeches

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