On each occasion they transplanted a kidney that was, immunologically speaking, a poor match for the recipient.

ECONOMIST: Organ transplants

Once that is done, the organ (in this case a kidney) and the bone marrow are transplanted and the patient is confined for a fortnight in a sterile environment to protect him from infection while his new, mixed immune system boots up.

ECONOMIST: Organ transplants

"Having heard of Ms. Cole's need for a kidney, the family asked that one of their loved one's kidneys be transplanted to Ms. Cole if they were a match, " Mone said.

CNN: Natalie Cole kidney came from deceased fan