to test these possibilities we examined the effect of spinal cord stimulation , vasopressin , norepinephrine and angiotensin ii on blood pressure , heart rate and plasma catecholamines of pithed spontaneously hypertensive rats , before and after treatment with ltd4 ( 20 micrograms/kg i.v . ) , a dose which produces hypotension in conscious and pithed rats .
C0028351
norepinephrine
C0020649
hypotension