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How Four Colors Become One Hundred Million

Image from Science Alert (Alessandra Celauro/Flickr)

‘After more than 25 years of searching, neuroscientists in the UK recently announced that they’ve discovered a woman who has an extra type of cone cell — the receptor cells that detect colour — in her eyes. Identified only as cDa29, the scientists finally found this woman two years ago . . . and think there are more tetrachromats like her out there.’ ~ Fiona Macdonald

An exciting read!

http://www.sciencealert.com/scientists-have-found-a-woman-whose-eyes-have-a-whole-new-type-of-colour-receptor