Organs from gay men or injecting drug users, often rejected for transplants, could safely be used, so long as donors test negative for infections such as HIV, and hepatitis B and C.
A liver transplant from an HIV-positive living donor to an HIV-negative recipient is possible, but there are still gaps in our knowledge.
What rights should a chimera with human-like cognitive abilities but without the ability to speak have?
Face transplants are one of the great leaps forward of 21st-century medicine. But soon they may not be necessary.