[quote=The Irish Tree]
It's One Piece; If it has organs and blood, a doctor can patch it up.
[/quote]

Excellent, but Dani also has mechanics. There will be a time when she will be unable to patch herself up like she normally can, because she'll be on the verge of death. There's also an interesting other little tidbit regarding a perpetual energy device, but we'll get to that later.