Expression and relationship between endothelin-1 messenger ribonucleic acid (mRNA) and inducible/endothelial nitric oxide synthase mRNA isoforms from normal and preeclamptic placentas - Napolitano, M; Miceli, F; Calce, A; Vacca, A; Gulino, A; Apa, R (J Clin Endocrinol Metab, 2000)