Assertion: vampire bat's saliva | /r/MadeOf | substance
Facets:
Source sentences:
text: Their saliva contains a substance which stops the blood clotting, allowing them to lap at the blood.
text: The saliva of vampire bats contains the substance, ‘draculin’, which prevents the victims blood from clotting.
text: That’s because the saliva of vampire bats contains a substance called draculin, which prevents the host’s blood from clotting.