https://en.wikipedia.org/wiki/Substance_P https://en.wikipedia.org/wiki/Substance_P > Substance P (SP) [...] is a neuropeptide, acting as a neurotransmitter an

https://en.wikipedia.org/wiki/Substance_P https://en.wikipedia.org/wiki/Substance_P > Substance P (SP) [...] is a neuropeptide, acting as a neurotransmitter and as a neuromodulator. > Substance P is released from the terminals of specific sensory nerves. It is found in the brain and spinal cord and is associated with inflammatory processes and pain.