News tagged with retina

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A master mechanism for regeneration?

ANN ARBOR, Mich.---Biologists long have marveled at the ability of some animals to re-grow lost body parts. Newts, for example, can lose a leg and grow a new one identical to the original. Zebrafish can re-grow fins.

dateOct 19, 2009 in Neuroscience
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An 'eye catching' vision discovery

Nearly all species have some ability to detect light. At least three types of cells in the retina allow us to see images or distinguish between night and day. Now, researchers at the Johns Hopkins School of Medicine have ...

dateJul 26, 2009 in Neuroscience
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When every photon counts

The eyes of nocturnal mammals contain particularly large numbers of the highly light-sensitive rods, the photoreceptor type used for night vision. This allows the detection of light levels millions of times lower than daylight. ...

dateApr 20, 2009 in Cell & Microbiology
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