title: [The changes in the angiotensin-converting enzyme in patients with obliterative pulmonary hypertension].
authors.forename: R Y
authors.initials: RY
authors.lastname: Sun
mesh_terms: D006801:Humans; D006976:Hypertension, Pulmonary / Q000201:enzymology* / Q000209:etiology; D008173:Lung Diseases, Obstructive / Q000150:complications; D007703:Peptidyl-Dipeptidase A / Q000097:blood*
chemical_list: D007703:Peptidyl-Dipeptidase A