That might seem like an absurd sort of question but with the rise of biotech it actually is a good question, did you know in at least UK law that if you have tissue removed from your body it no longer belongs to you?
It was established at first that it belonged to no one but more recently with the Genome project, but also back in the mid seventies, there have been corporate moves to patent genes or to establish in law that if someone has tissue removed or donates it then it no longer belongs to them.
Meaning that tissue could be removed from you in one procedure, it goes off and is used to create billion dollar cell lines because you could have a rare cell type or something.
Then there is the issue of organ buying and selling, everyone knows the horror story about people on holiday being drugged and having their kidneys stolen by student doctors, that's one horror.
There's the other horror that people in poverty traps in the developing world who actually may have healthier organs because of taboos on alcohol or food shortages could be exploited either through free trade which places them in a position where the temptations to sell are too great, there are perverse incentives to supply, or because they live in a corrupt regime and the authorities are willing to harvest them or compell them into it.