Melanocyte stimulating hormones

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melanocyte-stimulating hormone

(Science: endocrinology) A releasing hormone produced in the mammalian hypophysis and related structures in lower vertebrates. Made up of _ mSH (1665D), the same as amino acids 1-13 of aCTH and _ MSH (18 amino acids, 22 in humans). Causes darkening of the skin by expansion of the melanophores but its role in mammals is unclear.

Synonym: melanotropin.

Acronym: MSH