: a neurotransmitter composed of 36 amino acid residues that has a vasoconstrictive effect on blood vessels and is held to play a role in regulating eating behavior
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“Neuropeptide Y.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/neuropeptide%20Y. Accessed 26 Nov. 2025.
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