Killer Competition: Neurons Duke It Out For Survival

The developing nervous system makes far more nerve cells than are needed to ensure target organs and tissues are properly connected to the nervous system. As nerves connect to target organs, they somehow compete with each other resulting in some living and some dying. Now, using a combination of computer modeling and molecular biology, neuroscientists have discovered how the target tissue helps newly connected peripheral nerve cells strengthen their connections and kill neighboring nerves.

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