| MH | malignant histiocytosis; malignant hyperpyrexia; malignant hypertension; malignant hyperthermia; mam... |
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| MI | first meiotic metaphase; maturation index; medical illustrator; medical informatics; medical inspect... |
| MSH | medical self-help; melanocyte-stimulating hormone; melanophore-stimulating hormone |
| MSH | Melanophore-stimulating hormone |
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| alpha MSH | alpha melanophore-stimulating hormone |
| melanophore | Cell type found in skin of lower vertebrates (amphibian skin, fish scales) that contains granules of the black pigment melanin. The granules can be rapidly redeployed between a dispersed state (which darkens the skin) and concentration at the centre (which lightens it). One of a family of pigmented or light diffracting, coloured cells, known collectively as chromatophores. (18 Nov 1997) |
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| melanophore-expanding principle | 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) |
| melanophores | Pigment cells containing melanin. (12 Dec 1998) |
| teleost melanophore | <pathology> Large stellate cell found in the epidermis of fish. Cytoplasmic pigment granules (containing melanin) can be centrally located or rapidly dispersed, using a microtubule associated system. Altering the granule distribution changes the colour of the skin. (18 Nov 1997) |
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Synonyms : Melanophore
| melanophore |
a dermal chromatophore containing melanin, especially such a cell in fishes, amphibians, and reptiles.
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