Regenerative therapy
From Tardis Wiki, the free Doctor Who reference
According to the Seventh Doctor, regenerative therapy on Gallifrey was very advanced. He suggested that it could help the War Chief's aborted regeneration, though the War Chief doubted it could at his stage, and noted that regeneration therapy was far beyond the War Lord's scientists. (PROSE: Timewyrm: Exodus [+]Loading...["Timewyrm: Exodus (novel)"])
