EBV-specific T cell responses were analyzed using an IFN-γ enzyme-linked immunospot (ELISpot) assay as previously described (10 (link), 54 (link)). Briefly, splenocytes were depleted of human CD19+ cells using anti-CD19 microbeads (Miltenyi Biotec). The CD19-depleted fraction was stimulated with autologous LCLs at a ratio of 1:4 for 18 h, and incubation with R10 and phorbol myristate acetate (PMA)-ionomycin served as negative and positive controls, respectively. Each condition was performed in duplicates. Spots were counted on an ELISpot reader system (ELR02; Autoimmun Diagnostika GmbH).
Free full text: Click here