In order for an artificial retina to work it has to be small enough so that doctors can transplant it in the eye without damaging the other structures within the eye.

The next year, doctors transplanted a kidney from one identical twin to another, and in 1959 a kidney was successfully transplanted between fraternal twins.

How do doctors transplant a face, and is it a good idea?

The brain tissue that doctors in Mexico City transplanted into two patients suffering from the disease was from a spontaneously aborted fetus.

He said he hoped that by the year 2003, doctors would be transplanting Schwann cells as treatment for spinal injuries.

Now artificial hearts, formally known as ventricular assist devices, are being used by an increasing number of hospitals as "bridges," sustaining patients until doctors can locate and transplant a human heart.

In today's surgery, doctors removed muscle and nerve from Chelsey's leg and transplanted them to one side of her face.

Geriatric medicine is big business as doctors transplant our livers, zap our cataracts and expunge our cancers.

Cloning may some day allow doctors to transplant organs into patients without their bodies rejecting the organ as a foreign object.

While doctors have transplanted the fetal cells into Parkinson's patients before, the findings announced today represent the most thorough examination of the procedure to date.