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The UCLA team used a fresh mix of ingredients to produce structures called artificial thymic organoids that, just like the thymus, be capable of produce T cells from blood vessels stem cells. The researchers found that adult T cells made in the artificial thymic organoids transported a diverse selection of T cell receptors and proved helpful much like the T cells a normal thymus creates. Next, the group tested whether artificial thymic organoids could make the specialized T cells with cancer-fighting T cell receptors. If they placed a gene that delivers a cancer-fighting receptor towards the bloodstream stem cells, they discovered that the thymic organoids created many cancer-specific T cells, and that additional T cell receptors had been switched off.