| http://www.w3.org/ns/prov#value | - lood vessel for a relatively long period of time such as several months or indefinitely). [0003] For example, a procedure in which a clot is aspirated from a blood vessel typically includes placing the catheter in the blood vessel for a relatively short period of time such as a few minutes to a few hours and then withdrawing the catheter once the clot has been removed.
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