Posted: Jul 24, 2018 3:56 pm
by newolder
DavidMcC wrote:
newolder wrote:
DavidMcC wrote:...snip trolling... here is a link to an important diagram that is key to understanding the longevity of the surface vertebrate eye:
http://webvision.med.utah.edu/imageswv/photphag.jpeg

Image
The photoreceptor outer segments at stage 1 appear to get sliced into phagosomes in stages 2 to 5 that are then incorporated into the pigment epithelium at stage 6. How is this a "key to understanding the longevity of the surface vertebrate eye" ?

No, newolder, the slices of the rod photoreceptors are being digested, because they are being passed into the blood stream from the RPE cells. I thought it was obvious from the diagram alone, but you could read the associated article. I will find a link to it.

There is no mention of digestion in that image. How would auto-cannibalism be a key to longevity? :scratch: