Cellular regeneration
Cellular regeneration was a medical procedure for regenerating cells.
In the 2250s, this procedure was performed by the cellular regeneration chamber. By the 2370s, the technology had become smaller, with the hand-held cellular regenerator available. (DIS: "Far From Home"; VOY: "Latent Image")
In 2377, Doctor Lewis Zimmerman agreed to cellular regeneration for treating his illness. He would have a positive future after several treatments of this procedure. (VOY: "Life Line")
After arriving in 3189, Paul Stamets was treated for his shrapnel wound by the USS Discovery's cellular regeneration chamber. (DIS: "Far From Home")