Assertion: leech's saliva | /r/MadeOf | anticoagulant
Facets:
value: to prevent clotting
type: PURPOSE
Source sentences:
text: The saliva also contains an anticoagulant, hirudin, to prevent clotting, along with an anti-platelet agent to stop platelets from clumping and also prevent clotting.
text: Some medical procedures, particularly related to reconstructive surgeries, benefit from bleeding in order to reduce swelling and prevent clotting because the saliva of leeches contain both anticoagulants.