Expression of the CD45R0 isoform on CMV-specific CTL.

CD45R0 expression was determined in the total CD8⁺ T-cell population or the tetramer-binding CD8⁺ T cells by using flow cytometry. Examples shown are from patient 5 (A) and patient 1 (B). CD45RO expression is indicated on the x-axis. The y-axis represents CD8⁺ staining of the total PBMC population or tetramer staining of CD8⁺ gated cells.