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Nicholas Crane (left), 83, from east Sussex, with Luc Delauzun, 26, from London, who are the oldest and the youngest altruistic Kidney donors, at the launch of a campaign to get more healthy people to donate their kidneys to complete strangers. Nicholas who donated his Kidney just last month, and Luc the youngest who donated his Kidney in June 2010, met at the Welcome trust building in central London. (Photo by John Stillwell/PA Images via Getty Images)

Nicholas Crane (left), 83, from east Sussex, with Luc Delauzun, 26, from London, who are the oldest and the youngest altruistic Kidney donors, at the launch of a campaign to get more healthy people to donate their kidneys to complete strangers. Nicholas who donated his Kidney just last month, and Luc the youngest who donated his Kidney in June 2010, met at the Welcome trust building in central London.   (Photo by John Stillwell/PA Images via Getty Images)

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Kidney

Kidney

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Nurse and human kidney

Nurse and human kidney

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Johan Stegers, 49, from east Sussex with Kay Mason, 68, from Hertfordshire, who are the 100th and 1st altruistic Kidney donors at the launch of a campaign to get more healthy people to donate their kidneys to complete strangers. (Photo by John Stillwell/PA Images via Getty Images)

Johan Stegers, 49, from east Sussex with Kay Mason, 68, from Hertfordshire, who are the 100th and 1st altruistic Kidney donors at the launch of a campaign to get more healthy people to donate their kidneys to complete strangers.   (Photo by John Stillwell/PA Images via Getty Images)