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            ______   _    _    _    _    __   _   
    ___    /_   _// | \  / || | || | || | || | || 
   /   ||   -| ||-  |  \/  || | || | || | '--' || 
  | [] ||   _| ||_  | .  . || | \\_/ || | .--. || 
   \__ ||  /_____// |_|\/|_||  \____//  |_|| |_|| 
    -|_||  `-----`  `-`  `-`    `---`   `-`  `-`  
     `-`

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Text this: Why is NMNAT Protective against Neuronal Cell Death and Axon Degeneration, but Inhibitory of Axon Regeneration?