Cellular regeneration

Cellular regeneration was the process by which cells could be regrown or renewed in a body.

Eldrad recreated his original form using a machine he programmed to recognise his cell pattern. (TV: The Hand of Fear)

Queen Xanxia created a new body based on a cell projection system, which she described as "Permanent regeneration based on cells in my old body, and thus containing all the memory patterns and all the brilliance built up over the centuries. I'm nearly complete. My molecular structure has almost bound together, finally and forever." She told the Fourth Doctor that was why he could not turn her off like a simple hologram. However, the Doctor tried explaining that the process was unasble and would never work as she was still dependent on the last few seconds of life in the old body preserved by time dams. (TV: The Pirate Planet)

Joshua Naismith observed that the Immortality Gate encouraged "some sort of cellular regeneration," as he demonstrated to that Miss Collins's burns were healed by the machine. (TV: The End of Time)