Results 131 to 140 of about 12,369 (282)

Covariation between eumelanic pigmentation and body mass only under specific conditions [PDF]

open access: yes, 2018
Identifying the factors that mediate covariation between an ornament and other phenotypic attributes is important to determine the signaling function of ornaments.
Roulin, Alexandre
core  

Fluorescent quantification of melanin [PDF]

open access: yes, 2016
Melanin quantification is reportedly performed by absorption spectroscopy, commonly at 405 nm. Here, we propose the implementation of fluorescence spectroscopy for melanin assessment.
Baek   +11 more
core   +1 more source

Melanin Zinc Complex as a Biocompatible Agent for Clearing Bacteremia

open access: yesAdvanced Materials Interfaces
Sepsis, whole‐body inflammation caused by the contamination of blood by bacteria and endotoxins, affects millions of patients annually with high mortality rates.
Tahmineh Rahmani Eliato   +5 more
doaj   +1 more source

Condition-dependence, pleiotropy and the handicap principle of sexual selection in melanin-based colouration. [PDF]

open access: yes, 2015
The signalling function of melanin-based colouration is debated. Sexual selection theory states that ornaments should be costly to produce, maintain, wear or display to signal quality honestly to potential mates or competitors.
Roulin, A.
core   +1 more source

Quantitation of eumelanin and pheomelanin markers in diverse biological samples by HPLC-UV-MS following solid-phase extraction.

open access: yesPLoS ONE, 2019
Eumelanin and pheomelanin are well known and common pigments found in nature. However, their complex polymer structure and high thermostability complicate their direct chemical identification.
Susanne Affenzeller   +4 more
doaj   +1 more source

Superior Photoprotective Motifs and Mechanisms in Eumelanins Uncovered

open access: yesJournal of the American Chemical Society, 2014
Human pigmentation is a complex phenomenon commonly believed to serve a photoprotective function through the generation and strategic localization of black insoluble eumelanin biopolymers in sun exposed areas of the body. Despite compelling biomedical relevance to skin cancer and melanoma, eumelanin photoprotection is still an enigma: What makes this ...
Corani, Alice   +7 more
openaire   +5 more sources

Ultrafast spectral hole burning reveals the distinct chromophores in eumelanin and their common photoresponse

open access: yesChemical Science, 2019
Eumelanin, the brown-black pigment found in organisms from bacteria to humans, dissipates solar energy and prevents photochemical damage. While the structure of eumelanin is unclear, it is thought to consist of an extremely heterogeneous collection of ...
Forrest R Kohl   +2 more
semanticscholar   +1 more source

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