Medical Definition of Melanophore-expanding principle

1. A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; alpha-melanotropin is an N-acetylated peptide with 13 amino acids; beta-melanotropin has 22 amino acids. Synonym: intermedin, melanocyte-stimulating hormone, melanophore-expanding principle. (05 Mar 2000)



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Lexicographical Neighbors of Melanophore-expanding Principle

melanokeratosis
melanoleukoderma
melanoleukoderma colli
melanoliberin
melanoma
melanoma growth stimulatory activity
melanomas
melanomata
melanomatosis
melanonychia
melanopathy
melanophage
melanophilin
melanophlogite
melanophore
melanophore-expanding principle (current term)
melanophores
melanoplakia
melanoprotein
melanopsin
melanorrhagia
melanorrhoea
melanos
melanoscope
melanoses
melanosis
melanosis circumscripta precancerosa
melanosis coli
melanosity

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