Fig. 1
From: Mechanisms underlying the antihypertensive properties of Urtica dioica
A representative tracing a showing the effect of norepinephrine (NE), acetylcholine (Ach), and different doses of crude extract of U. dioica (Ud.Cr) on mean arterial pressure (MAP) in normotensive rats under anesthesia. b The hypertensive and hypotensive effects of norepinephrine (NE) and acetylcholine (ACh), respectively. c The blood pressure of normotensive and hypertensive rats. d The effect of crude extract of U. dioica (Ud.Cr) on MAP in normotensive and hypertensive rats, under anesthesia (n = 6–7), *p < 0.05, **p < 0.01, and ***p < 0.001 represent the significance difference between the % fall in MAP on normotensive and hypertensive rats