Figure 7. Inhibition of the responses to noradrenaline by Y-27632 in nimodipine-treated aorta.

Representative recording of the effect of noradrenaline (1 μM NA) on [Ca²⁺]_cyt (upper trace) and contractile tension (lower trace) in fura-2-loaded aortic segments pretreated with the Ca²⁺ channel blocker nimodipine (1 μM). Y-27632 (10 μM) or vehicle were added at the time indicated by the dashed arrow. Control and Y-27632 traces were from different segments of the same aorta.