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Color blindness cure

Researchers at the University of Washington have used gene therapy to correct a form of red-green blindness in two spider monkeys.  Males of this variety of spider monkeys lack the genes for a pigment that allows females to see more colors.  The two male monkeys were trained to pick out color pattern differences between pictures, and after the scientists transferred the pigment gene to them, they eventually were able to see differences between more colors.  The therapy appears to be lasting, and applicable to older subjects, with the "middle-aged" monkeys' brains adapting to the new pigment.  The researchers think that in addition to being applicable to humans, the treatment could transfer the visual capabilities of some animals to people, such as the ability to see in the infrared and ultraviolet ranges.

http://blogs.discovermagazine.com/80beats/2009/09/16/gene-therapy-cures-color-blindness-in-monkeys/

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