Search results
Results From The WOW.Com Content Network
However, in animals with thick dermal layers, such as adult reptiles, dermal melanophores often form three-dimensional units with other chromatophores. These dermal chromatophore units (DCU) consist of an uppermost xanthophore or erythrophore layer, then an iridophore layer, and finally a basket-like melanophore layer with processes covering ...
Close-up of fish melanophores. Fish coloration is produced through specialized cells called chromatophores. The dermal chromatophore is a basic color unit in amphibians, reptiles, and fish which has three cell layers: "the xanthophore (contains carotenoid and pteridine pigments), the iridophore (reflects color structurally), and the melanophore (contains melanin)". [5]
The dermal chromatophore unit includes xanthophores, iridophores, and melanophores, which function together to display or inhibit certain coloring. [5] The movement of melanosomes to melanophore fingers conceals the light-reflecting iridisphore layer, dictating a darker pigmentation at night.
The pseudopodial process (aka the tanning process) happens slowly in dermal melanocytes in response to ultraviolet light and to production of new melanosomes and increased donation of melanosomes to adjacent keratinocytes, which are typical skin surface cells. Donation occurs when some keratinocytes engulf the end of the melanocyte pseudopodia ...
Blue-ringed octopuses spend most of their time hiding in crevices while displaying effective camouflage patterns with their dermal chromatophore cells. Like all octopuses, they can change shape easily, which allows them to squeeze into crevices much smaller than themselves.
The brilliant iridescent colors of the peacock's tail feathers are created by structural coloration, as first noted by Isaac Newton and Robert Hooke.. Structural coloration in animals, and a few plants, is the production of colour by microscopically structured surfaces fine enough to interfere with visible light instead of pigments, although some structural coloration occurs in combination ...
Naegeli–Franceschetti–Jadassohn syndrome (chromatophore nevus of Naegeli) Netherton syndrome; Neurofibromatosis type 1 (von Recklinghausen's disease) Neurofibromatosis type 1; Neurofibromatosis type 3 (neurofibromatosis mixed type) Neurofibromatosis type 4 (neurofibromatosis variant type) Neutral lipid storage disease (Dorfman–Chanarin ...
Naegeli–Franceschetti–Jadassohn syndrome (NFJS), also known as chromatophore nevus of Naegeli and Naegeli syndrome, [1] [2] is a rare autosomal dominant [3] form of ectodermal dysplasia, characterized by reticular skin pigmentation, diminished function of the sweat glands, the absence of teeth and hyperkeratosis of the palms and soles.