Human skin pigmentation: melanocytes modulate skin color in response to stress

@article{Costin2007HumanSP,
  title={Human skin pigmentation: melanocytes modulate skin color in response to stress},
  author={Gertrude-Emilia Costin and Vincent J. Hearing},
  journal={The FASEB Journal},
  year={2007},
  volume={21},
  pages={976 - 994}
}
All organisms, from simple invertebrates to complex human beings, exist in different colors and patterns, which arise from the unique distribution of pigments throughout the body. Pigmentation is highly heritable, being regulated by genetic, environmental, and endocrine factors that modulate the amount, type, and distribution of melanins in the skin, hair, and eyes. In addition to its roles in camouflage, heat regulation, and cosmetic variation, melanin protects against UV radiation and thus is… 
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