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Researchers knock out a gene from pigs that would cause the human immune system to attack transplanted organs.
Researchers grow dog organs in the lab, while Novartis investigates the possibility of using pig livers to keep people alive while waiting for an organ transplant.
Meanwhile, the Campaign for Responsible Transplantation distorts the number of organs available for transplantation procedures.
If there's a way to save a human life, you can be certain that animal rights activists will protest it.