Plasminogen activator

A plasminogen activator is a is_associated_with::serine protease which converts is_associated_with::plasminogen to plasmin, thus promoting is_associated_with::fibrinolysis.

Types include:
 * is_associated_with::Tissue plasminogen activator
 * is_associated_with::Urokinase

It is inhibited by is_associated_with::plasminogen activator inhibitor-1 and is_associated_with::plasminogen activator inhibitor-2.