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Representative trace showing the contractile response induced by oxytocin in isolated murine tracheal rings. Similar responses were observed in eight different tracheal rings. The insert shows the contractile responses expressed as means ± SEM from 8 different tracheal rings stimulated with 1 μM oxytocin or 10 μM carbachol (p < 0.05 compared to basal values, statistical significance using ANOVA).
