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melanocyte-stimulating hormone
(mĕlˈə-nō-sītˌstĭmˌyə-lāˌtĭng, mə-lănˈə-)
noun Abbr. MSH A hormone secreted by the pituitary gland that regulates skin color in humans and other vertebrates by stimulating melanin synthesis in melanocytes and melanin granule dispersal in melanophores. Also called intermedin.
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