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Detection of tet540-positive CD8 T lymphocytes after booster vaccination with transgenic B lymphocytes. (A). Tet540-positive CD8 T cell responses, ex vivo and after in vitro peptide restimulation on day 28 and 43, in subject #115 of cohort 4b who received an injection of freshly prepared transgenic B lymphocytes at the dose of 0.5 × 105 followed one month later by a similar dose of transgenic lymphocytes. R – restimulation in culture followed by the number of restimulations.
