Assertion: transfusion | /r/CapableOf | open the way
Facets:
value: for the development of blood banks
type: PURPOSE
Source sentences:
text: While the first transfusions had to be made directly from donor to receiver before coagulation, it was discovered that by adding anticoagulant and refrigerating the blood it was possible to store it for some days, thus opening the way for the development of blood banks.