Retina, SEM

Retina, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Retina. Coloured freeze-fracture scanning electron micrograph (SEM) of the layers of the retina, the light-sensitive tissue that lines the inside of the eye. Rod and cone cells (green cylindrical objects, upper frame) form the outer layer of the retina. The highly-sensitive rods respond to dim light, while the cones detect red, blue and green light. Signals from these neurons (nerve cells) are passed along a chain of other neurons to the optic nerve, which carries them on to the brain. Magnification: x750 at 6x7cm size.

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Keywords: anatomy, cell, cells, coloured, cone, cones, eye, freeze-fracture, freeze-fractured, human body, light-sensitive, retina, retinal, rod, rods, scanning electron micrograph, sem, sight, vision, visual sense

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