eli5 : Why are there organs and limbs transplant but no brain and entire eye transplant?
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Complexity. Your nervous system is crazy complex and completely removing something from it, then trying to replace it with a different one, is beyond anything we can do right now. I mean, we can’t even reconnect severed nerves within the same body (like paraplegics due to spinal damage) so how would we connect cut nerves to a foreign organ?
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