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Nature Methods 5, 858–859 (1 October 2008) | doi:10.1038/nmeth1008-858a

New twists on photoswitchable proteins

Natalie de Souza

With the discovery of GFP many years ago, a green glow seemed to settle over much of biology, but it was not long before additional fluorescent proteins were reported. These now extend over practically the entire visual spectrum.