The thymus is the only organ capable of producing conventional, mature T cells; a crucial part of the adaptive immune system. However, its efficiency and function are progressively reduced as we age, leading to a compromised immune system in the elderly. Moreover, production of T cells with specific receptors is an important concern for cancer immunotherapy. Current in vitro methods produce immature T cells that are not useful for therapy. Researchers at the National Cancer Institute (NCI) have generated an autologous thymic organoid from human pluripotent stem cells to address this problem. The organoid can be used to develop clinical applications such as production of autologous T and natural killer T (NKT) cells and reconstitution of the adaptive immune system. NCI is seeking licensees for the thymic organoid and the method of its generation to be used in a variety of clinical applications.