So, troll blood poured over wounds seems to "regenerate" them.
Fascinating.
It indeed opens to many exciting opportunities.

In your opinion, since it made a destroyed eye regrow, does it means it can regenerate nerves, internal organs... everything?
Mabye even parts of the brain?

And, since it appears to be no rejection, could troll flesh, muscle and bone be grafted too, to increase mass and size?

Does the newly regenerated flesh possess some or part of the regenerative powers of trolls too?