One good example of this organization is the retinal cell types which are arranged as independent, nonrandom mosaics that maximize the distance between neighbouring cells.
42.
McGinnis also is exploring the possibility of removing unhealthy retinal cells, " fixing " them in a culture and placing them back into the retina.
43.
Macular degeneration, a deterioration of retinal cells that causes a loss of the central field of vision, has recently been linked to chronic sun exposure.
44.
Cerebral achromatopsia differs from congenital achromatopsia in that it is caused by damage to the cerebral cortex as opposed to abnormalities in the retinal cells.
45.
Although researchers aren't exactly sure why retinoblastoma occurs, it is known to be associated with an abnormality on the chromosome responsible for controlling retinal cell division.
46.
Early cases are often treated with lasers, which have the unfortunate side effect of destroying normal retinal cells as well as the damaged areas beneath them.
47.
And once the retinal cells start dying, they release growth factors to encourage new veins to grow-but they grow in the iris instead of the retina.
48.
Researchers know that the gene is normally active in the retinal cells known as rods, where it controls the production of a molecule called a transporter.
49.
Similar procedures could regenerate skin for burn patients, immune cells for people with HIV, retinal cells for blind people or muscle cells to combat muscular dystrophy.
50.
:This sounds like one of a few strange effects that depend on the fact that the response time of the retinal cells is dependent on light intensity.
