Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
pheomelanin
This term describes a specific biochemical pigment that produces warm tones in human pigmentation. It is distinguished from eumelanin, which produces brown or black colors. The presence of this pigment is the primary biological driver for the appearance of red hair and freckles.
As a chemical substance and a biological compound, it is treated as a mass noun. It does not have a plural form in standard scientific usage; instead, quantities are described using terms like levels, concentrations, or amounts.
Meanings
Examples
Pheomelanin is the pigment responsible for the red color of hair.
People with a high concentration of pheomelanin often have very fair skin.
The ratio of eumelanin to pheomelanin determines the exact shade of a person's hair.
I wonder if my red hair is due to an abundance of pheomelanin.
Unlike eumelanin, pheomelanin does not provide significant protection against UV radiation.
Unlike eumelanin, pheomelanin does not provide significant protection against UV radiation.
The synthesis of pheomelanin involves the amino acid cysteine.
Is it true that pheomelanin is what makes some people's freckles look reddish?
The researcher analyzed the levels of pheomelanin in the skin samples.