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Fig. 5. Effects of angiotensin II (ANG II; 10-8 mol l-1)
before and after treatment with propanolol (10-8 mol
l-1) and phentolamine (10-8 mol l-1), sotalol
(10-7 mol l-1), isoproterenol (ISO; 10-9 mol
l-1) and phenylephrine (Phenyl; 10-9 mol l-1)
on stroke volume (VS) and stroke work
(WS) in isolated and perfused paced eel hearts. For
details, see Materials and methods. Percentage changes are shown as means
± S.E.M. of 4-5 experiments for each
drug. *Significantly different from the control value
(P<0.05).