melanocyte-stimulating hormone

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melanocyte-stimulating hormone

[mə′lan·ə‚sīt ¦stim·yə‚lād·iŋ ′hȯr‚mōn]
(biochemistry)
A protein substance secreted by the intermediate lobe of the pituitary of humans which causes dispersion of pigment granules in the skin; similar to intermedins in other vertebrates. Abbreviated MSH. Also known as melanophore-dilating principle; melanophore hormone.
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