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Colour blindness corrected by gene therapy : Nature News

Posted Sep 17 2009 10:05pm
Male squirrel monkeys are normally red-green colorblind. They are missing one of the opsins. A group at UW added a gene for the opsin to a virus, squirted it into the retinas of two male monkeys, and after about 5 months they were able to perform discrimination tasks that required seeing red and green dots. The effect seems to be stable for these two monkeys.

http://www.sciencenews.org/view/generic/id/47396/title/Monkeys_get_full_color_vi
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