sympathin
noun
sym·pa·thin
ˈsim-pə-thən 
: a substance (as norepinephrine) that is secreted by sympathetic nerve endings and acts as a chemical mediator
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Cite this Entry
“Sympathin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/sympathin. Accessed 31 Dec. 2024.
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