[The changes in the angiotensin-converting enzyme in patients with obliterative pulmonary hypertension].
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D006801:Humans; D006976:Hypertension, Pulmonary / Q000201:enzymology* / Q000209:etiology; D008173:Lung Diseases, Obstructive / Q000150:complications; D007703:Peptidyl-Dipeptidase A / Q000097:blood*
D007703:Peptidyl-Dipeptidase A