American Thoracic Society, American Journal of Respiratory and Critical Care Medicine, 8(180), p. 780-787, 2009
DOI: 10.1164/rccm.200810-1662oc
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Rationale: Severe pulmonary arterial hypertension (PAH) is characterized by the formation of plexiform lesions and concentric intimal fibrosis in small pulmonary arteries. The origin of cells contributing to these vascular lesions is uncertain. Endogenous endothelial progenitor cells are potential contributors to this process.