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    Retinitis pigmentosa: Cone photoreceptors starving to death

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    In retinitis pigmentosa, rod and cone photoreceptors die. Although rods die as a consequence of rod-specific genetic mutations, there is no clear explanation for the progressive loss of cones. A new study in this issue suggests that changes in the insulin/mTOR pathway and cell starvation can partially account for cone death in this disease. © 2009 Nature America, Inc. All rights reserved.Peer Reviewe
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