The EBV-infected cells were isolated as described previously (Onozawa et al., 2018 (link)). In brief, the peripheral blood mononuclear cells (PBMCs) from patients were isolated by density gradient centrifugation using Lymphoprep™ (Abbott Diagnostics Technologies AS, Oslo, Norway) and sorted into CD4-, CD8-, or CD56-positive fractions by using antibody-conjugated magnetic beads (Miltenyi Biotec, Bergisch Gladbach, Germany). The primary monocytes were obtained by negative selection assay using Pan Monocyte Isolation Kit (Miltenyi Biotec).
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