Eyes without a face.
November 13, 2011 8:16 PM Subscribe
posted by Isosceles (21 comments total)
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Exposing our skin to the sun's ultraviolet rays unfortunately can give rise to a multitude
of adverse health effects. Our skin's ability to produce melanin
serves as buffer by absorbing those nasty UV rays. But how exactly does our skin know when it's being exposed to UV light? Well, apparently it can see
, a pigment believed to be only found in the eye ( and necessary for the development of photoreceptor cells ) has been discovered in skin cells as the kickstarter for melanin production.