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vital ultraviolet |
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vital ultraviolet (UV),
the ultraviolet wavelengths between 320.0 and 290.0 nm, which are believed to be necessary or helpful for normal growth and health. Ultraviolet radiation at this wavelength converts vitamin D to its first active form. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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