Assertion: leech's compound | /r/AtLocation | larger quantities
Facets:
value: recently
type: TEMPORAL
value: by recombinant gene
type: OTHER
Source sentences:
text: Early therapeutic studies of hirudin were limited by low natural yield, but the compound has recently been produced in larger quantities by recombinant gene techniques.11, 12 Recombinant hirudin binds avidly to thrombin, thus low doses inhibit venous thrombosis in animals.