Assertion: streptokinase | /r/HasProperty | the agent
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Source sentences:
text: Streptokinase, because it has been the agent most extensively studied and its clinical benefits have been established, now serves as a standard for comparison with the others (anisoylated plasminogen-streptokinase activator complex, urokinase, recombinant tissue plasminogen activator, and recombinant pro-urokinase).