| http://www.w3.org/ns/prov#value | - While these custom-made structures may overcome some of the aforementioned deficiencies, they are extremely expensive and time-consuming to fabricate. [0009] Accordingly, there is a need for a vascular graft which is useful in repair or replacement of a branched section of a blood vessel which is substantially blood-tight and includes a gradual transition from the main lumen to the branched lumen,
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