 Your wife has a host of patients who may someday need organ transplants, and researchers think cross-species technology (xenotransplantation) is a very promising source of organs. Organs (hearts, kidneys and lungs) from pigs—many of which have been genetically modified with human genes—are already being tested in primates.
Estimates suggest that more than 60,000 people who would benefit from a transplant die each year waiting for organs. Considering that there are about three organs for every 10 patients in need of an organ for transplant, an unlimited supply of organs—even part-human pig organs—appeals to you and your wife. You are somewhat troubled by the knowledge that animals with human genes will be grown solely for the purpose of "harvesting" their organs. But you also know that while it is illegal to buy or sell human organs in the U.S., organ black markets exist in other countries due to organ scarcity.
How do you weigh the clearly established need for organs and the existence of a black market in human parts with the largely unknown risks and costs of xenotransplantation?
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