Bedrossian, C W Levels of angiotensin-converting enzyme in pleural effusion. [electronic resource] - Archives of pathology & laboratory medicine Jul 1981 - 345-6 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0003-9985 Subjects--Topical Terms: HumansPeptidyl-Dipeptidase A--analysisPleural Effusion--enzymology