Disclosed are novel method of inducing tissue regeneration through administration of gamma delta T cells that have been endowed regenerative activity. In one embodiment said regenerative active is bestowed upon said cells by culture with a regenerative cell population. In other embodiments a chimeric antigen receptor (CAR) is transfected which induces generation of regenerative substances upon activation of said CAR. Regenerative factors useful for the treatment of the invention depend on the condition for which treatment is desired, for example, in neurological conditions production of brain derived neurotrophic factor is produced upon activation of said CAR, wherein said CAR recognizes antigens or neoantigens associated with neuronal injury.