Figure 1

Effects of 5 – Hydroxytrptamine (5-HT) on human umbilical artery tone. Representative recordings demonstrating the vascular response elicited by cumulative additions of 5-HT [1 nmol – 10 μmol] at 20 minute intervals in an umbilical artery preparation from a woman of normal BMI (A), and that observed in an umbilical artery from an obese woman (B).