Photoprotection
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Photoprotection is a group of mechanisms that nature has developed to minimize the damages that the human body suffers when exposed to UV radiation. These damages mostly occur in the skin, but the rest of the body (especially the testicles) can be affected by the oxidative stress that is produced by UV light. Photoprotection of the human skin is achieved by extremely efficient internal conversion of DNA, proteins and melanin. Internal conversion is a photochemical…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Photoprotection is a group of mechanisms that nature has developed to minimize the damages that the human body suffers when exposed to UV radiation. These damages mostly occur in the skin, but the rest of the body (especially the testicles) can be affected by the oxidative stress that is produced by UV light. Photoprotection of the human skin is achieved by extremely efficient internal conversion of DNA, proteins and melanin. Internal conversion is a photochemical process that converts the energy of the UV photon into small amounts of heat. This small amount of heat is harmless. If the energy of the UV photon were not transformed into heat, then it would lead to the generation of free radicals or other harmful reactive chemical species (e.g. singlet oxygen, or hydroxyl radical).