Chinese scientists have performed the first pig-to-human lung transplant ever, with the organ remaining functional for over a week after surgery.

In a first, scientists in China transplanted a lung from a pig into a human so they could see how the host immune system handled the procedure.

A lung from a genetically modified pig has been transplanted into a person for the first time 1. The recipient, a 39-year-old man in China, was brain dead, but the organ survived for nine days. Lungs are the most difficult organ to transplant,