Use of alprostadil for the treatment of pulmonary hypertension in rats: variations in histopathology and vessel structure 
He Jun-feng, Gu Guo-mei, Yang Le-mei
Chinese Journal of Tissue Engineering Research . 2015, (40): 6455 -6459 .  DOI: 10.3969/j.issn.2095-4344.2015.40.011