Doctors in Houston, Texas, have done the world's first scalp-skull transplant. The May 22 operation was to help a cancer patient with a large head wound. Here's a look at some other dates for first successful transplants:

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1954 — first kidney, Brigham & Women's Hospital in Boston.

1966 — first pancreas, University of Minnesota in Minneapolis.

1967 — first liver, University of Colorado Health Sciences Center.

1967 — first heart, Cape Town, South Africa.

1998 — first hand, in Lyons, France.

2005 — first face, in Amiens, France.