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Lizard
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===Aging=== A significant component of [[ageing|aging]] in the painted dragon lizard ''[[Ctenophorus pictus]]'' is fading breeding colors.<ref name = Olsson2012>Olsson M, Tobler M, Healey M, Perrin C, Wilson M. A significant component of ageing (DNA damage) is reflected in fading breeding colors: an experimental test using innate antioxidant mimetics in painted dragon lizards. Evolution. 2012 Aug;66(8):2475-83. doi: 10.1111/j.1558-5646.2012.01617.x. Epub 2012 Apr 9. PMID 22834746</ref> By manipulating [[superoxide]] levels (using a [[superoxide dismutase]] mimetic) it was shown that this fading coloration is likely due to gradual loss with lizard age of an innate capacity for [[antioxidant|antioxidation]] due to increasing [[DNA damage (naturally occurring)|DNA damage]].<ref name = Olsson2012/>
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