Data folder contains preprocessed CyTOF files (FCS format) from a 31-marker mass cytometry panel to examine all major PBMC lineages and specifically CD4 and CD8 T cell memory dynamics in people with HIV (PWH) who are durably ART suppressed for an average of 6.7 years (LT-ART, n = 10) and PWH in the first 500 days following ART initiation (A5248, n = 10). The panel also includes markers of activation (HLA-DR, CD38, CCR5), activation/exhaustion (PD-1), proliferation (Ki67), survival (Bcl-2) and long-lived memory (CD127). Included are A5248 files.