Membrane-bounded organelle found in melanocytes; when melanin synthesis is active internal structure is characteristic, containing melanofilaments that have a periodicity of around 9nm and are arranged in parallel arrays. Mature melanosomes, in which the filamentous structure is masked by the dense accumulation of melanin, are transferred to keratinocytes in the skin. Also found in pigmented retinal epithelium and in some cells of the connective tissue.
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A melanosome is an organelle found in animal cells, and is the cellular site of synthesis, storage and transport of melanin, the most common light-absorbing pigment found in the animal kingdom. These melanosomes are responsible for color and photoprotection in animal tissues. Melanosomes are synthesised in the skin melanocytes, choroidal melanocyt...Found on http://en.wikipedia.org/wiki/Melanosome
<cell biology> Membrane bounded organelle found in melanocytes, when melanin synthesis is active internal structure is characteristic, containing melanofilaments that have a periodicity of around 9nm and are arranged in parallel arrays. ... Mature melanosomes, in which the filamentous structure is masked by the dense accumulation of melanin, ...Found on http://www.encyclo.co.uk/local/20973
(mel´ә-no-sōm″) any of the granules that contain melanin. The melanin is synthesized within melanocytes; then the melanosomes are transferred to keratinocytes.Found on http://www.encyclo.co.uk/local/21001
In geology, a melanosome is a dark, mafic mineral band formed in migmatite which is melting into a eutaxitic texture ; often, this leads to the formation of granite. The melanosomes form bands with leucosomes, and in that context may be described as schlieren or migmatitic. ...Found on http://en.wikipedia.org/wiki/Melanosome_(geology)
Type: Term Pronunciation: mel′ă-nō-sōm′ Definitions: 1. The generally oval pigment granule (0.2 by 0.6 mcm) produced by melanocytes. Synonyms: eumelanosomeFound on http://www.medilexicon.com/medicaldictionary.php?t=53735
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