Organ transplantation is dangerous because it can lead to the recipient rejecting the new organ. The consequence of that is usually death, because you wouldn’t resort to that unless the stakes were high.
Growing new organs is a developing technology that totally bypasses the risk of rejection by using the recipient’s own cells to base it off of. I’m not sure what the cancer rate is for those situations, but at the very least you’ll live longer than if your organ continued to fail.
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