Single-cell repertoire and transcriptome sequencing reveals clonally expanded and transcriptionally distinct lymphocytes in aged CNS. Gene expression and immune receptor repertoire sequencing was performing for both B and T cells. This dataset contains the VDJ sequencing information for the four samples. Each B cell and T cell library was sequenced across four lanes. Files with _WT_ in their name correspond to the young (4-6 week B6 mice) Files with _12_ in their name before the BDJ or VDJ text correspond to the 12-month-old cohort. Files with _18_ in their name before the BDJ or VDJ text correspond to the 18-month-old cohort in which four brains were pooled. Files with 4_18_ in their name before the BDJ or VDJ text correspond to the 18-month-old mouse that was processed and sequenced alone. The L001 - L004 in the file names indicates the sequencing lane. Samples with BDJ correspond to the B cell repertoire library (B cell VDJ). Samples with TDJ correspond to the T cell repertoire library (T cell VDJ).