Cross-species transplants require us to examine the relationships between humans and animals.
(Shutterstock)
The heart used in the first pig-human transplant was infected with a pig virus. This reveals that using other species as organ donors may not provide a solution for organ shortages.
Xenotransplantation has made significant strides over the past few decades.
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Recent successes putting genetically modified pig organs into people have brought xenotransplantation back into the spotlight.
Kidneys for donation are in short supply, via Shutterstock.
From www.shuttertock.com
A shortage of organs for donation has led some to ask: would establishing a market help? That, however, raises another question: would it also harm?