ANNALS OF ANATOMY-ANATOMISCHER ANZEIGER, cilt.181, sa.6, ss.549-554, 1999 (SCI-Expanded)
In this study we examined the chorionic villi of 5 normal human placentas at 12-14 weeks of gestation ultrastructurally with regard to differentiation of the vascular components. The aim of the present report is to discuss the factors influencing vasculogenesis (in situ formation of blood vessels) at the ultrastructural level.