title: Letter: Source of plasminogen activator.
mesh_terms: D004848:Epithelium / Q000378:metabolism; D005342:Fibrinolysis; D006801:Humans; D009132:Muscles / Q000378:metabolism; D010958:Plasminogen / Q000378:metabolism*; D014680:Veins / Q000378:metabolism
chemical_list: D010958:Plasminogen