Can Octopus Arms Grow Back? (Are Regenerated Limbs Just as Good?)

Photo showing octopus

Octopuses can regenerate entire arms, even though each arm has a mini brain and an extensive network of neurons.  Healing begins with undifferentiated stem cells that develop into specialized cells, such as the nerve and muscle cells of a new arm.  Regenerated arms are as good as new and perform as fully functional replacements for … Read more