Substance P.
D002490:Central Nervous System / Q000378:metabolism; D006801:Humans; D007421:Intestine, Small / Q000294:innervation / Q000378:metabolism; D009420:Nervous System / Q000378:metabolism*; D009475:Neurons, Afferent / Q000378:metabolism; D018377:Neurotransmitter Agents / Q000378:metabolism*; D010525:Peripheral Nerves / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000378:metabolism; D018040:Receptors, Neurokinin-1; D012701:Serotonin / Q000378:metabolism; D013373:Substance P / Q000096:biosynthesis / Q000378:metabolism*
D018377:Neurotransmitter Agents; D011956:Receptors, Cell Surface; D018040:Receptors, Neurokinin-1; D012701:Serotonin; D013373:Substance P