Phenotypic analysis of PBMCs and human iPSC-derived cells was performed as described.22 24 27 (link) Briefly, single cell suspensions of PBMCs and human iPSC-derived cells were stained with a master mix of antibodies (Abs) for surface stains after Fc block (human Fc block; BD Biosciences) for 20 min at room temperature. Antibodies used in this study are listed in online supplemental table S2. Live/Dead Fixable Aqua Dead Cell Stain Kit (ThermoFisher Scientific) and LIVE/DEAD Fixable Near-IR Dead Cell Stain kit (ThermoFisher Scientific) were used to exclude dead cells from the analysis. Samples were analyzed using LSRII or LSRFortessa (BD Biosciences) with FlowJo software (TreeStar).