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・ Melanoptilia haemogastra
・ Melanoptilia nigra
・ Melanoptilon
・ Melanopula
・ Melanopyge
・ Melanorhinus
・ Melanorivulus
・ Melanormia
・ Melanorosauridae
・ Melanorosaurus
・ Melanorrhoea usitata
・ Melanoscia
・ Melanoseps
・ Melanosis
・ Melanosis coli
Melanosome
・ Melanosome (geology)
・ Melanosphecia
・ Melanospilus
・ Melanospora
・ Melanosporales
・ Melanosteus
・ Melanostolus
・ Melanostoma
・ Melanostoma dubium
・ Melanostoma fasciatum
・ Melanostoma mellinum
・ Melanostoma scalare
・ Melanostomias
・ Melanotaenia


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Melanosome : ウィキペディア英語版
Melanosome

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 melanocytes and retinal pigment epithelial (RPE) cells in the eye, and in melanophores in lower vertebrates.
==Structure==

Melanosomes are relatively large organelles, measuring up to 500 nm in diameter.〔 They are bound by a bilipid membrane and are, in general, rounded, sausage-like, or cigar-like in shape. The shape is constant for a given species and cell type. They have a characteristic ultrastructure on electron microscopy, which varies according to the maturity of the melanosome, and, for research purposes, a numeric staging system is sometimes used.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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