Single cell suspensions of spleens were blocked with anti-mouse CD16/32 (BioLegend) and surface stained with the indicated markers, and evaluated by flow cytometric analysis as described18 (link),29 (link),35 (link)–37 (link). The following Abs were used; anti-CD45 (clone 30-F11, Invitrogen), anti-PD-1 (clone 29F.1A12, BioLegend), anti-CX3CR1 (clone SA011F11, BioLegend), anti-KLRG1 (clone 2F1/KLRG1, BioLegend), anti-CD4 (clone GK1.5, BioLegend), anti-CD8α (clone 53-6.7, BD Biosciences), and anti-CD3 (clone 145-2C11, BioLegend). LIVE/DEAD Fixable Near-IR Dead Cell Stain kit (Thermo Fisher Scientific)-stained cells were excluded from the analysis. Samples were acquired by Fortessa (BD Biosciences) cytometers, and analyzed with FlowJo software (Treestar).
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