the potentiating effects were antagonized by further treatment with phentolamine ( 1 mum ) .6 adrenaline , noradrenaline and dopamine but not isoprenaline , produced a weak contraction of the longitudinal muscularis mucosae in the presence of propranolol ( 3 mum ) .
C0014563
adrenaline
C0028351
noradrenaline