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Second Sight Medical Products has developed a medical device, Argus II retinal prosthesis system, that gives blind people a form of sight.

Argus II retinal prosthesis system

Source: Second Sight

The device includes a miniature camera that fits into the patient’s glasses, which converts video images into a series of small electrical pulses. The impulses are transmitted wirelessly to electrodes implanted on the surface of the retina. These stimulate the remaining cells in the retina to create patterns of light in the brain, and the brain learns to interpret these patterns.

Argus II retinal prosthesis system

Source: Second Sight

This has been developed for patients who have lost their sight through retinitis pigmentosa, an inherited eye disease that damages the retina at the back of the eye.

Scientists can grow a new bladder. They take a tissue sample, grow up the cells, and lay them over a bladder-shaped scaffold, which can be implanted into the body.

The oldest fossils found so far are cell- or bacteria-like microfossils found in Australia that date back 3.4 billion years.

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