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Review
. 2005 Feb 8;15(3):R94-6.
doi: 10.1016/j.cub.2005.01.027.

Photoreceptor Evolution: Ancient Siblings Serve Different Tasks

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Review

Photoreceptor Evolution: Ancient Siblings Serve Different Tasks

D-E Nilsson. Curr Biol. .

Abstract

Photoreceptor cells of vertebrate eyes are fundamentally different from those of invertebrate eyes. New work on the brain of a ragworm now suggests that ancestral bilaterians possessed both types of photoreceptor cell.

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