PROFESSOR MIODRAG STOJKOVIC / SCIENCE PHOTO LIBRARY PROFESSOR MIODRAG STOJKOVIC / SCIENCE PHOTO LIBRARY
Stem cells. Coloured scanning electron micrograph (SEM) of two human retinal stem cells (brown and red) on their feeder cells (yellow). Stem cells from the retina of the eye are able to differentiate into any of the different retinal cell types. The type of cell they mature into depends upon the biochemical signals received by the immature cells. This ability makes retinal stem cells a potential source of cells to repair damaged retinal tissue and restore eyesight in diseases such as diabetic retinopathy and macular degeneration. The patients own stem cells could be used and so would not be rejected. Magnification: x2,700 when printed 10 centimetres wide.
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