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Maroc Maroc - WN.COM - Science - 01/Mar 12:15

Deep-sea fish break the mold with novel visual system

For more than a century, biology textbooks have stated that vision among vertebrates – people included – is built from two clearly defined cell types: rods for processing dim light and cones for bright light and color. New research involving deep-sea fish shows this tidy division is, in reality, not so tidy. Scientists have identified a new type of visual cell in deep-sea fish that blends the shape and form of rods with the molecular machinery and genes of cones. This hybrid type of cell, adapted for sight in gloomy light conditions, was found in larvae of three deep-sea fish species in the Red Sea. The species studied were: a hatchetfish, with the scientific name...

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