Lidia Fedorenko was the first person in Russia to have herself frozen. Her head and assorted DNA samples are now being preserved in a so-called Dewar vessel by the company KrioRus. Image: ©Murray Ballard

When Fedorenko died in 2005, KrioRus did not yet own its own cryostorage facility. So her family kept her brain on dry ice for several months instead. Image: ©Murray Ballard

An employee of the Alcor Life Extension Foundation in Arizona is preparing the drugs that are utilised in the opening phase of cryopreservation – storage in liquid nitrogen. Image: ©Murray Ballard

This is a DNA archive that is intended to serve as a back-up if the physical bodies of those concerned should be destroyed in an accident and cannot be placed in cryopreservation. Image: ©Murray Ballard

Across the whole world, some two thousand people have signed up to have themselves frozen after death. Some of them will probably end up in liquid nitrogen in these cryostats of the Cryonics Institute in Michigan. Image: ©Murray Ballard

The bodies or body parts of these people are currently being kept in liquid nitrogen in the Cryonics Institute in Michigan in the USA. Across the world, there are some 200 ‘patients’ being preserved for the long-term in this manner. Image: ©Murray Ballard

This is how a patient is frozen in one of the Dewar vessels at the Alcor Life Extension Foundation in Arizona. This Foundation was set up back in 1972, ten years after Robert Ettinger published his book ‘The prospect of immortality’, which first put forward the idea of cryonics. Image: ©Murray Ballard