[Maigrey]

But there was one part of the article that will make all of this ethically questionable: the researchers utilized fetal cells to form the regeneration.

So, when will they begin the experiments utilizing non-fetal cells for this research? Until then, I won't be choosing to subsidize these endeavors.

Tho it is impressive, but not at the cost of life itself.

[snarks_when_bored]

Note that these are experiments involving mice, not humans. I understand your concern, but what appears to be happening is that in the human case researchers are finding ways around the fetal cell bottleneck by using clever chemical baths to modify mature cells. Let's hope that continues.