Improvement of T-cell repertoire and thymic output post-GT. (A) T-cell repertoire analysis by TCR spectratyping pre- and post-GT in CD4⁺ and CD8⁺ T cells. (B) sjTREC content in CD4⁺ (red line) and CD8⁺ (blue line) T cells (dotted line corresponds to the tenth centile for the patient’s age group). TRECs, T cell receptor excision circles.