Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Alternative spelling of
pheomelanin .
Etymologies
Sorry, no etymologies found.
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Examples
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All hair contains a mixture in varying concentration of both black-brown eumelanin and red-yellow phaeomelanin pigments, which are susceptible to differential chemical change under certain extreme burial conditions (for example wet reducing conditions, or dry oxidising conditions).
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Whether the conditions within the wood and plaster coffin contributed to accelerated color change, or whether this individual naturally had more phaeomelanin pigmentation in his hair is hard to say without further analysis.
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Importantly, phaeomelanin is much more stable to environmental conditions than eumelanin, hence the reactions occurring in the burial environment favor the preservation of phaeomelanin, revealing and enhancing the red/yellow color of hairs containing this pigment.
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The two most common types of melanin found in modern birds are eumelanin, associated with black and grey feathers, and phaeomelanin, found in reddish brown to yellow feathers.
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The two most common types of melanin found in modern birds are eumelanin, associated with black and grey feathers, and phaeomelanin, found in reddish brown to yellow feathers.
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The phaemelanosomes are rod-like and produce phaeomelanin, a reddish-brown or yellow pigment, while the eumelanosomes are more spherical in shape and produce black-grey eumelanin.
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The two most common types of melanin found in modern birds are eumelanin, associated with black and grey feathers, and phaeomelanin, found in reddish brown to yellow feathers.
TG Daily 2010
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The phaemelanosomes are rod-like and produce phaeomelanin, a reddish-brown or yellow pigment, while the eumelanosomes are more spherical in shape and produce black-grey eumelanin.
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Within this family, it is eumelanin that corresponds to the black and brown hair shades, and phaeomelanin that corresponds to shades of red.
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Melanin comes in two types: phaeomelanin (red to yellow) and eumelanin (dark brown to black).
PR.com Press Releases Placécol USA 2009
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