Healing

Sister Jatt described the New New York Hospital as a place of healing. (TV: New Earth)

The Ashtallans had prodigious healing abilities that made them immortal, able to readily heal from wounds that would be fatal to Humans and Time Lords. Following the introduction of Ashtallan cells into their biology, the First Doctor postulated that Ian Chesterton and Barbara Wright might have absorbed some of the Ashtallan's enhanced self-repair. (AUDIO: The Invention of Death)

The energy released by a Time Lord regeneration possessed healing properties. (TV: The Tenth Planet, The Deadly Assassin, Journey's End, Let's Kill Hitler, The Angels Take Manhattan, The Witch's Familiar)

The Thals who lived in the Thal City referred to their ionising towers as healing Skaro's atmosphere. (AUDIO: Return to Skaro)