phaeomelanin


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phaeomelanin

(ˌfiːəʊˈmɛlənɪn)
n
(Zoology) a variety of melanin that gives rise to a red-coloured pigment
References in periodicals archive ?
Nle4DPhe7 [alpha]-melanocyte-stimulating hormone increases the eumelanin: phaeomelanin ratio in cultured human melanocytes.
Proposed mechanisms of its action include inactivation of the melanogenic enzyme, tyrosinase, influencing the switch from eumelanin to phaeomelanin.
Hair has two types of pigments: eumelanin (dark brown or black pigment) and phaeomelanin (light, reddish-yellow pigment).
Leucism is a partial or total lack of eumelanin and phaeomelanin in the feathers as a result of an inherited disorder of the deposition of these pigments in the feathers.
ch] mutation stifles production of phaeomelanin, which is responsible for darker background coloration.
The pigment eumelanin manifests in the colors of brown and black, and phaeomelanin in the colors of yellow and red, with each pigment having a slightly different size and shape.