“Inhibition of the renin-angiotensin (ANG) system (with captopril) and of the cardiovascular actions of vasopressin [with 1-(beta-mercapto-beta, …),8-D-arginine vasopressin (d(CH2)5DAVP)] had no hypotensive effects in sham-operated rats under any conditions, but antagonism of nicotinic … pentolinium ) caused a prompt … blood pressure.”