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Neurokinin a

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neurokinin a

(Science: chemical) A mammalian decapeptide tachykinin found in the central nervous system. It is similar in structure and action to substance p and neurokinin k. The compound has bronchoconstrictor, smooth muscle constrictor, and hypotensive effects and also activates the micturition reflex.

Chemical name: Kassinin, 1-de-L-aspartic acid-2-de-L-valine-3-L-histidine-5-L-threonine-7-L-serine-