[syriacus]

From the article:

"the [immune] response is less aggressive."

I wonder how that affects the chances of developing cancer in that particular area of the eye .

[syriacus]

From the article: But after receiving injections of retinal tissue generated from human embryonic stem cells, the rodents' vision did not deteriorate and, researchers say, proved to be 100 per cent better than untreated rats.

How good is the vision in the eyes of the rats with the transplants?

I realize that some vision is better than none, but "100% better" doesn't mean 100%.

Is the vision in the untreated rats is 2%, then the vision in the rats helped by the sacrificed humans is 4%.