What is interesting is that the liver is one of the few human organs which are really able to regrow after an injury.
Therefore even if this may be just a coincidence that the legend of Prometheus includes the periodic regrowth of his liver after being wounded, there is also the possibility that some ancient people were aware of some cases of liver regeneration, though it is not clear how they could have discovered that.
Therefore even if this may be just a coincidence that the legend of Prometheus includes the periodic regrowth of his liver after being wounded, there is also the possibility that some ancient people were aware of some cases of liver regeneration, though it is not clear how they could have discovered that.