RICHMOND, Va. (AP) _ A woman gave part of her liver to her husband in what doctors say was the first transplant in the country involving a living adult liver donor who is not a blood relative of the recipient.

The man and woman were in excellent condition Thursday, a day after the 13 1/2-hour surgery, officials at the Medical College of Virginia Hospital said.

Surgeons transplanted the right lobe of the woman's liver _ about half of the organ. The partial livers should regenerate in the man and woman, doctors said.

``If this catches on ... then it really broadens the possibility for adult patients getting transplants,'' said Dr. Robert Fisher, who led the transplant team.

The couple were not identified. The man, a 28-year-old real estate appraiser, suffered from a disease of the bile ducts. He and his 26-year-old wife have a 14-month-old son.