- Home
- Search
- Settings
- Top Contributors
- Help Center
Answer:
do you mean pheomelanin the pigment in hair and skin?
Pheomelanin is also found in hair and skin and is both in lighter skinned humans and darker skinned humans. Pheomelanin imparts a pink to red hue and, thus, is found in particularly large quantities in red hair. Pheomelanin is particularly concentrated in the lips, areola, nipples, glans of the penis, and vagina. Pheomelanin also may become carcinogenic when exposed to the ultraviolet rays of the sun. Chemically, pheomelanin differs from eumelanin in that its oligomer structure incorporates benzothiazine units which are produced instead of DHI and DHICA when the amino acid L-cysteine is present.
Pheomelanin is also found in hair and skin and is both in lighter skinned humans and darker skinned humans. Pheomelanin imparts a pink to red hue and, thus, is found in particularly large quantities in red hair. Pheomelanin is particularly concentrated in the lips, areola, nipples, glans of the penis, and vagina. Pheomelanin also may become carcinogenic when exposed to the ultraviolet rays of the sun. Chemically, pheomelanin differs from eumelanin in that its oligomer structure incorporates benzothiazine units which are produced instead of DHI and DHICA when the amino acid L-cysteine is present.
First answer by ID0410586834.
Last edit by ID0410586834.
Question popularity:
1
[recommend question].
Can you use self raising flour in stead of plain flour?
In: Baking
Answer it!
How do you laugh like Selena Gomez?
In: Selena Gomez
Answer it!
How far is Plymouth Indiana from Kokomo Indiana?
In: Indiana
Answer it!
» more