HomeIn vitro viability of human cavernosal endothelial and fibroblastic cells after exposure to papaverine/phentolamine and prostaglandin E1 August 26, 2010 print this article In vitro viability of human cavernosal endothelial and fibroblastic cells after exposure to papaverine/phentolamine and prostaglandin E1 Pilatz et al.; BJU Int. 2005 Jun;95(9):1351-7