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The ultraviolet B UVB radiation that penetrated through the atmosphere was absorbed by photosensitive macromolecules including proteins, RNA and DNA in these unicellular organisms that resulted in alterations in their structure. Cancer Epidemiol Biomarkers Prev Environmental factors that influence the cutaneous production of vitamin D. It also has a tendency to become inflamed. Similarly yeast and fungi also contain high amounts of ergosterol and when exposed to sunlight produce vitamin D 2. Risk factors for melanoma include number of sun burn experiences as a child and young adult, genetic predisposition, red hair color, increased numbers of moles on the body. Causal criteria in nutritional epidemiology.
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Do UV Sun Rays Go Through Windows?


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Do UV Sun Rays Go Through Windows?


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Do UVA and UVB affect the body in different ways?

Microwave Shortwave Medium wave Longwave. Protection is required as UV radiation damages the skin and can cause sunburn. Mercury lamps and metal halide lamps have an outer glass cover to stop UV radiation, and are designed such that if the outer glass is broken, the lamp ceases to function.
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