A 14-year-old girl who wanted her body to be preserved so she could be brought back to life, won an historic legal fight shortly before her death.
The girl, who was terminally ill with a rare cancer, was supported in her wish to be cryogenically preserved by her mother - but not by her father.
A High Court judge ruled that the girl's mother should be allowed to decide what happened to the body.
The girl, who died in October, has now been taken to the US and frozen.
The details of her case have just been released.
The teenager - who cannot be named - and who lived in the London area, used the internet to investigate cryonics during the last months of her life.
Cryonics is the process of freezing and preserving a whole body in the hope that resuscitation and a cure are possible in the distant future.
She wrote: "I think being cryopreserved gives me a chance to be cured and woken up - even in hundreds of years' time."
The judge, Mr Justice Peter Jackson, visited the girl in hospital and said he was moved by "the valiant way in which she was facing her predicament".
His ruling, he said, was not about the rights or wrongs of cryonics but about a dispute between parents over the disposal of their daughter's body.
Cryonics is a controversial procedure and no-one yet knows if it is possible to revive people once their bodies are frozen.
There are facilities in the US and Russia where bodies can be preserved in liquid nitrogen at very low temperatures (less than -130C) - but not in the UK.
The cost of freezing a body for an infinite amount of time is estimated to be around £37,000.
____________________________________________The teenager's letter to the judge
"I have been asked to explain why I want this unusual thing done.
"I am only 14 years old and I don't want to die but I know I am going to die.
"I think being cryopreserved gives me a chance to be cured and woken up - even in hundreds of years' time.
"I don't want to be buried underground.
"I want to live and live longer and I think that in the future they may find a cure for my cancer and wake me up.
"I want to have this chance.
"This is my wish."