p,hypothalamic substance meaning in English

《英文msh词典》P,Hypothalamic Substance
[入口词] P,Hypothalamic Substance
[主题词] Substance P
[英文释义] An eleven-amino acid neurotransmitter that appears in both the central and peripheral nervous systems. It is involved in transmission of pain,causes rapid contractions of the gastrointestinal smooth muscle,and modulates inflammatory and immune responses.