[Heterogeneity of the rat respiratory way responses to serotonin].

Abstract

In stimulation of preganglionic and postganglionic nervous fibres of the trachea and stimulation of preganglionic nervous fibres of the bronchi, serotonin strengthened reduction of a smooth muscle to 114 %. Methysergide (1.0 mkg) reduced responses to serotonin to 74-77 % on the trachea and practically didn't influence the bronchi. Against ketanserinum (1.0… (More)

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