Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them. Researchers at the National Institute of Biological Sciences in Beijing have discovered a genetic switch linked to vitamin A. After activating this pathway, they managed to regenerate the ear pinna of a mouse, an animal that previously lacked this ability.
Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them. Researchers at the National Institute of Biological Sciences in Beijing have discovered a genetic switch linked to vitamin A. After activating this pathway, they managed to regenerate the ear pinna of a mouse, an animal that previously lacked this ability.
Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them.