 He is shot again before the regeneration completes, causing him to die instantly.However, in "The Wedding of River Song",<ref></ref> it is revealed this was a shape shifting android the Doctor used to fake his death, making this questionable.In cases of non-fatal injury, Time Lords who have recently regenerated can use left over cellular energy to heal and even regrow severed limbs, as seen in "The Christmas Invasion" where the Tenth Doctor regrows a hand.