Assertion: leech's saliva | /r/CapableOf | allow blood
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Source sentences:
text: The benefits of the treatment lie not in the amount of blood that the leeches ingest, but in the anti-bloodclotting (anticoagulant) enzymes in the saliva that allow blood to flowfrom the bite for up to six hours after the animal is detached, effectivelydraining away blood that could otherwise accumulate and cause tissue death.